Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec8f15657063557c…

MALICIOUS

PDF

237.2 KB Created: 2021-06-30 10:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c22b0907922831693ffea0cb26a853bf SHA-1: a453f3b0daa92498a2731a189e9b4ed8c6b1ea4b SHA-256: ec8f15657063557ca78d0c6e16f18275cb74bc2efe7e8e0adf9697f63d1a5493
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as a malicious PDF by multiple heuristics and a machine learning classifier, specifically flagging it as an advance-fee scam lure. It contains numerous links, including one pointing to a compromised WordPress upload, suggesting it directs users to download further malicious content. While no scripts were explicitly extracted, the PDF structure and the nature of the links indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

Heuristics 6

  • 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.
  • 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://queure.ru/uplcv?utm_term=the+lottery+kerstin+l+hahn
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a382f42b012---93598373833.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/ac3b129181064f3f5c969491e40a1e84/vozetitupizirumemeko.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b09ad701942.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/b2a2833a18b8dc42bbbbc1dbcc28f20d/dominasajukebiforubivid.pdf
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/udkkt4mver7f7rn0r8r1q1efg2/rajukekemugu.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160cff4e94596d---mesaribefejeworojupo.pdf
    • http://georgekoldun.com/var/upload/file/zarejuwunapano.pdf
    • http://vtvxm.vn/userfiles/file/39478545866.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/edb1dab03b09c1d4930b4882c80d76f9/palawulusife.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/4f11417a2250ce84c55570a78db532cc/marunatakopifirosatawire.pdf
    • http://xn--dlek-5qa.com/admin/UserFiles/file/65186970617.pdf
    • http://aweibel.com/Photo/file/59628659352.pdf
    • https://electrabicycles.pl/app/webroot/uploads/file/16201904952109.pdf
    • https://musikkursus.dk/userfiles/file/19641151103.pdf
    • http://angelescare.com/userfiles/file/67118033137.pdf
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7286a253c4---87716399904.pdf
    • http://taiwan-casters.com/userfiles/file/jevetijobiwedapufim.pdf
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/d032c32ec5094098c6c525b081beb4fe/61205089772.pdf
    • http://accessiblevehicleservices.com/userfiles/file/kojuruzobonaxowoke.pdf
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/wejefotekarorewamuxa.pdf
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607358a4161a0---18547748454.pdf
    • https://argumentua.com/i/file/viwemipeluxigovobekatis.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_off000345ef.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x345EF 16792 bytes
font_01_sfnt_off00035e06.bin
37ccfb59293d8b4acfa989abefefc89c230e135c78539749cfe5e316d1a640ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35E06 10372 bytes
font_02_sfnt_off0003757b.bin
c67bd22d9604dbf049e2ad7fe4db0359c79e3b01a3800854934cd2c29c8b6c46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3757B 19100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.