Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e2b5aea59e56d6…

MALICIOUS

PDF

93.4 KB Created: 2021-06-28 09:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 20fa49eb77d6f46c7f605d1f54ed9ad1 SHA-1: eb92c9cd3ff1400d5e3002775fb4a6f861abdfdf SHA-256: 18e2b5aea59e56d6b25afa8ca198a307c27f25dec9b24b815ea3e7182a35a79a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document exhibits characteristics of an advance-fee scam, presenting a lure related to lottery winnings or parcel delivery. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting an attempt to distribute malicious content or phish for information. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/uplcv?utm_term=santa+one+liners
    • http://ronniejoymemorialfund.com/clients/1/1a/1a75100f29d804137a154ca93ef51a80/File/nobipizitizadavir.pdf
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa851db3088---72545426345.pdf
    • http://consulcongress.it/uploads/assets/file/sakiwusani.pdf
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/d1b50a0509a3bff47c4e9904f068b778/86022571297.pdf
    • http://commsoft.nu/demo/ktb/wsmbilder/files/44670248065.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b53a2908b8---86859552444.pdf
    • http://zabradli-znerezu.cz/userfiles/file/jejusikiwodexazepox.pdf
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/23etp497stp2p03hmash5ffoiq/gedote.pdf
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210628114848.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c42e58c90---larujovusa.pdf
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/rfoibjd77vokbcae1l0i7l8eln/sunitixopufalofi.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ft02314k5f4maar2bb4iratqvl/96145570209.pdf
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/d244b2fef586fa443c8d0e97687f0588/dosujolaxapatej.pdf
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16090d4eadb6c3---vuxiwesurizetibup.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/pintuiii9tdjecfo3a9a4nf6t3/xuvebosomorapi.pdf
    • http://jun-travel.com/userfiles/file/50466477090.pdf
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/f01392120f3e2983ea1b5d274a434b82/talizijenozetuzufipufi.pdf
    • http://easykart.store/userfiles/file/23618512613.pdf
    • https://ntct.dz/ckfinder/userfiles/files/turagozuwajavujafajetaro.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e83a3f238e---94539194392.pdf
    • https://ozmutludokum.com/userfiles/file/22605922865.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/6148b3cf03f309d6632624e623d53403/wudot.pdf
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095924d0944c---18142860123.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c25.bin
44da53b397d9d1a9392c71adb2fba58ecc9c82f7ee0167b52a588c92b9ba86a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C25 17520 bytes
font_01_sfnt_off000139cd.bin
0dcbe499ba822a7c10c034715a8d65fb7a6410ef79278fc83de1f82a0565a040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139CD 10176 bytes
font_02_sfnt_off000150ad.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150AD 16792 bytes

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