Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f1e7b9c2ac4fe6…

MALICIOUS

PDF

125.3 KB Created: 2021-05-21 18:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 315ac190895110d630323fe2313f33f2 SHA-1: 3554925c9160d9a977bd01eb0f906079ffed96bf SHA-256: f2f1e7b9c2ac4fe698501bdc59b0a4f6a36b133bf92e0d3d97a8966168b7a3cd
196 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous external URLs, many pointing to compromised WordPress sites, which likely serve as lures to trick users into fraudulent schemes. The document body, though heavily obfuscated, suggests a theme related to poultry farming proposals, potentially a pretext to mask the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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://queure.ru/uplcv?utm_term=poultry+farming+project+proposal+in+kenya+pdf
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a40a78b8a4c---92414183620.pdf
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16090b69368631---dubujomuju.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/087aa3b32224a1c7bd2ced153d261788/75193681800.pdf
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16076cb81d6271---reriwikuxami.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/9210863abc10764433b4335031fbc3cb/47277403176.pdf
    • http://anhuizhkj.com/upload_fck/file/2021-5-6/20210506234815195408.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb18513f89---tosunozokekukopile.pdf
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160896b5dd2965---vozavoxuw.pdf
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701bead0fc9---98449149830.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/a10a9c33ab7c0eb6597dd8b32f3d520e/piluvetujaw.pdf
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b21555ee6a---50911188841.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16087061c6e445---fosoj.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080c7ee04410---95178571617.pdf
    • http://phuocthuan.vn/images/pic/file/poxojagutiw.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/88db32860b0254f49e1de2fb278131cd/21571714715.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/7c6f5df481ea4b2687c3061b1d3c8838/74292120460.pdf
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160970a1a07d55---65031722384.pdf
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089b94a5c46b---lusaribumo.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/tpb348vq99g53ej1a1j6f89942/85391064300.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL
    • 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_off00019372.bin
a23eda7ac063f0e06d01d074e12d6af619d7e9842a38d8895ffea7979fbb2df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19372 5716 bytes
font_01_sfnt_off0001a6e8.bin
54c30532335382b15635dea65d8d2b5a678a1ef9a31b41a469ac813cd78d38cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6E8 13100 bytes
font_02_sfnt_off0001d2f8.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D2F8 16060 bytes

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