Malicious PDF — malware analysis report

Static analysis result for SHA-256 02aef96b1b6bee20…

MALICIOUS

PDF

87.7 KB Created: 2021-06-30 07:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0d312c8e8955e020f2b7b68a410d8661 SHA-1: f02b27e93e79b872151c9ff2ad18ac8ada647335 SHA-256: 02aef96b1b6bee20f0eb0781a5bb50a6e20c80efa707c586e7fca30b70d3e46c
196 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. The content and structure indicate an advance-fee scam, presenting a lure related to lotteries or prizes and parcel delivery requirements. The document contains numerous links to external sites, many of which appear to be compromised WordPress upload directories, suggesting a mechanism for hosting and distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/4niv1s8q98qof3ut6f5k54e272/94001537228.pdf
    • http://biosite.ru/images/news/file/53586374029.pdf
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/68fe1c3530b4593a97db4d41ed2e661e/bejuravebefo.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608072c18d4b6---44481015609.pdf
    • http://www.odnpoznan.pl/fotki/file/file/kakusi.pdf
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/eg9m49rq54vt8m3engolj7m3o3/korugegenuburijajeletax.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/17a328cb4df1824e83d837520414944f/55955009446.pdf
    • https://pametnidom.hr/pametne_kuce/userfiles/file/53238194585.pdf
    • https://ienter.bg/files/gulalabijevafefaketa.pdf
    • http://meyanko.com/userfiles/file///78363267880.pdf
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/92494803619.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607df36aede84---bezojirabogameva.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b22fbe2e302---bugifidosesosimu.pdf
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e95d22863---25209883904.pdf
    • http://ilksolar.com/Images/Media/files/jozasuzukexozotudedo.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a964e810783---41504262211.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da83c1b4557---59382751503.pdf
    • http://ibb-online.ru/f/file/78707893654.pdf
    • http://smflow.in/admin/uploads/file/maguvigupeveseb.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bedbcb0b21---sutovuvenodivuxid.pdf
    • http://elite-nails.pl/Upload/file/65273288879.pdf
    • http://www.hangmandigital.com/files/file/40881784895.pdf
    • https://alianzatours.com/imagenes/file/wiwifoluwiwikija.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073a1c78ebe8---7656006832.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=above+all+things+if+kindness+is+your+king
    • 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_off0000f04e.bin
85af77887c46cf39a7771f930bb8e0f7b4e8249409e4b4fa514b77eb3ec31975
pdf-font-stream PDF embedded font (sfnt) at offset 0xF04E 17992 bytes
font_01_sfnt_off00011fa5.bin
58d26ffeeacbe9ea28486308de909e632de798e29333a67aab6343de8ed8edf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FA5 11124 bytes
font_02_sfnt_off00013969.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13969 16792 bytes