Malicious PDF — malware analysis report

Static analysis result for SHA-256 279e29ca1b164ad8…

MALICIOUS

PDF

108.8 KB Created: 2021-07-16 09:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eaddfa42b321b2004df021af309dd9fe SHA-1: aa0a768f5b2cdf692bce1e64495885483127aa5f SHA-256: 279e29ca1b164ad8f0a655a3ea791cc071bd5f5273c78366d4b1ec7853796001
196 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9882

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://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4190ef1b97---85633009955.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/c694b277df4c4ef5d4c9c48aa154aeec/9469748209.pdf
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vumagunogaposojeg.pdf
    • http://ingpiazza.eu/userfiles/files/23521522287.pdf
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac95492fdc9---18113082100.pdf
    • https://narimasu-chintai.net/jcfiles/file/6637438288.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/24thnujf1mik218bhko7ceagh5/nikup.pdf
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16091c767670ec---65026715420.pdf
    • https://computerzone.pk/file/wovelo.pdf
    • http://ajk-opakowania.eu/upload/fck/file/wenugajojo.pdf
    • https://rajatotogroup3.com/contents//files/71941995278.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c91c0db5b7d---78377695778.pdf
    • http://forter.vn/hinhanh/file/bilawumikos.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609881f7d97f8---88183394256.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86d8e5c05d---mataposevufuvosejot.pdf
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/tj9l06usq01o7jq1u6q5orujqv/57345754107.pdf
    • http://aarogyamedico.com/userfiles/file/parujorimewadixozefuzuzuj.pdf
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160898b9ad0447---sasile.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dd6fa28931a---samapogiwegemisiradi.pdf
    • http://akcjonariusz.com/UserFiles/file/kipudorumef.pdf
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/dinagupadotodewuna.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711198c9ac5---12339418830.pdf
    • http://interno-kazan.ru/upload/files/sadavofamogav.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=bloons+tower+defense+unblocked+at+school
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125a7.bin
3db2d7cc723b3004d37543e5612cd7584c80602163b8abd6b55b2b9144dc56b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x125A7 21512 bytes
font_01_sfnt_off00015e70.bin
465fb74a118d72be8c4abd70c245c09be526ee18fe550a9c5d0193d3b2fa3911
pdf-font-stream PDF embedded font (sfnt) at offset 0x15E70 10952 bytes
font_02_sfnt_off000177ea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x177EA 16792 bytes
font_03_sfnt_off00018ffb.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
pdf-font-stream PDF embedded font (sfnt) at offset 0x18FFB 16092 bytes