Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee68cfe9e0f9ac5…

MALICIOUS

PDF

88.5 KB Created: 2021-07-06 08:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: fb2cbefb7702fc440b4808adbfcd5f12 SHA-1: 8848ae02e5a42a75b9a41d85d7f8644310a20c48 SHA-256: 2ee68cfe9e0f9ac58d7288a43a7be153e3f0204b7190a9414110996c83e1810c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the heuristic firings point to a malicious PDF designed to lead users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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.
  • 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://oniceh.ru/uplcv?utm_term=sharks+lay+eggs+or+live+birth PDF link annotation
    • http://ruresept.ru/files/file/36200168229.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/51c4b929baa219ad973c635479046b97/30831333439.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/81029496474.pdfIn PDF document text
    • http://health-bridge.in/upload/file/peloxusigewadokojik.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/2eccabbef27e72d516d8a9d0e5e9cab7/50442733240.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/1734983893.pdfIn PDF document text
    • http://amidoux-peintures.com/ckfinder/userfiles/files/78081242488.pdfIn PDF document text
    • https://cihangirhotel.com/upload/ckfinder/files/28936150388.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706b0cb3085---34918698833.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd81a1402ac---raxexezaraxivobamivigeke.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/8e9d2f002cef5412cea693babe363a09/retamiwimuxepavimovol.pdfIn PDF document text
    • http://galettedesrois.hu/userfiles/file/57130289944.pdfIn PDF document text
    • https://zold-kommando.hu/files/4115987168.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a9345492670---95405889480.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16084864553851---fovazemafowadataburujo.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/garudogewuriduj.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/869b71ccbb556587ee85917d40db096b/walofenibenerosipavafez.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/091024193717.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/lcr17r72mom5r31jp212cbvg63/39600658334.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1bad2eb10---78374209174.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/67387337463.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/16523737876.pdfIn PDF document text
    • https://o2opr.co/userfiles/files/milozezu.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/a6c4b25769da10e06c55aa946108fea2/gepozawubaxa.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/2021050916540271182.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6A 10768 bytes
SHA-256: 1a53d6540df96ad48ede7c6b4a465e8f69a3b4da1e2c28cb67d1bdbd0573de91
font_02_sfnt_off0001285c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285C 17100 bytes
SHA-256: 6dffbffd14fa58c055928602bf8fde8bf9e7c65d2a9e676880f777c3ae2fc4b2

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