Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fe08005fc27297…

MALICIOUS

PDF

88.6 KB Created: 2021-06-29 21:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d40e776b51b21f06d91c01d1b273f8ac SHA-1: 476d2f36de34483dd05c7b9af3d2eb4ad8f58fe1 SHA-256: 96fe08005fc27297d3f76b950303adfb395754665b6d50ec75c42e809a51d1a5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious, containing numerous links to potentially compromised websites and disposable hosting. The heuristic 'SE_URGENCY_LURE' suggests the document uses urgent language to prompt user interaction with these links. While no scripts were explicitly extracted, the presence of multiple external links and the overall detection pattern indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://studiocommercialedelpiano.it/userfiles/files/29755667026.pdf In PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/j1vnmq7gta9f8f90agn98o2j95/26358151955.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce24d1bdf2b---8709584754.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/e1b02b7eeb3e78628d78c556b1d77298/zitotesebotapizemamerefos.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/93800015559.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cddc50ded4---98914239555.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/95596643841.pdfIn PDF document text
    • https://havanic.com/cache/fck_files/file/ropuxujutujoruxunakeze.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c774bd2f5---24885185969.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d098b0474e4---92688739823.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/zozajalebusikefogan.pdfIn PDF document text
    • http://blueyee.com/upload/file/221505454657.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/574fa03c63016a24a36d410c16ba113a/rurikunedonip.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/61d3811f41e0585d5c40d648421439b8/35034256214.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/magajidibewikozulupuje.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080537ff1050---gopitofiwejazetetal.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/danatex.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/903730d78f767dca5c9e57ee9a2b5c72/29931183942.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/44892445477.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/3c650e86317377f7c6007b16a356f125/xidop.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160a00efbbcfc1---tuxokititevojugawesewur.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/4883566812b5a2ef670b2b2ba524d6ca/simaguzesonesox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=best+political+betting+sitesPDF link annotation
    • 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_off0000f893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF893 10640 bytes
SHA-256: 32fc3a9dd63ba4ad9878d30e1373f6c006778cc531e30315fbd0dcbd5bc11de1
font_01_sfnt_off000110df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DF 17056 bytes
SHA-256: 715fb07cbb4eef22cd51bb398c1abdbe1a48e9c4dad7e558678bee37fa34ea45
font_02_sfnt_off00013d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D73 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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