Malicious PDF — malware analysis report

Static analysis result for SHA-256 df09dff0fa90f343…

MALICIOUS

PDF

96.3 KB Created: 2021-07-01 09:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 0aff7186669b2c53efe925085ddd2c51 SHA-1: 4d86eca2d8f44e68337ef09ef6afcb9ce45373f2 SHA-256: df09dff0fa90f343fe027379ab6c443dc17f436131ca236acf05db625e230348
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of an advance-fee scam, leveraging lures related to lotteries, prizes, or parcel deliveries. It contains numerous links pointing to potentially compromised websites or disposable hosting, designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into providing sensitive information or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=100+acres+agriculture+land+for+sale PDF link annotation
    • http://rheinmotel.com/userfiles/file/tiridinebe.pdfIn PDF document text
    • https://angkagenap.com/contents//files/61809062774.pdfIn PDF document text
    • http://fabtur.ru/upload/files/tilenejojoxilar.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4a1d3f92d---kikazuxupafudotalerax.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06981914a3---pepel.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b6b69e217---94236534586.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc00d002e9---38768312787.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095bf1380d08---59104527992.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/6efe014d2411a65ff335ef96ec6a4396/sutasujunejose.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c36fe56db14---85687545631.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/l1bmvma91drnab1rhd07m5ao86/17185448623.pdfIn PDF document text
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/ne01labvhubsaoj24r0vhnst17/zalajejitipok.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/nojoneputavir.pdfIn PDF document text
    • http://rotang.net/userfiles/file/92486016354.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/54b0afus4r1s1omuh38hsj0i8v/80857564185.pdfIn PDF document text
    • http://grafichesirio.com/userfiles/files/zuvujowode.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/nenalawiluperari.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/nonutugafixala.pdfIn PDF document text
    • http://zamokugrofa.sk/admin/fckeditor/file/81705278266.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16071a8bc764f9---fukunajeliwusalilojogigar.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/97omm25e120cqrfsorku3d91rg/fubupofaxowava.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/82464072ce0b40dd28c1b131f0797b2a/8569092557.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/62df205425ae2ae08d083fd8f70f6fba/75126832510.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/a24f714f52328c90d8895269add7a9ee/goxuworosob.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d32c443e6b9---sapagivawisemixedatuk.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/937a957baeed0c83a4a6107a7f9d6b4e/95104497526.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001145f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1145F 17836 bytes
SHA-256: 73f557384fa9f1bfd599d9673f1314b40363f6fdb51af27de74803783c4770b7
font_01_sfnt_off000142b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B5 10828 bytes
SHA-256: c47daedbb392dc00040f3207efa9acb12dc80251fa096b38338ec87cbd88dd16
font_02_sfnt_off00015b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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