Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02a2415dd2c3354…

MALICIOUS

PDF

67.8 KB Created: 2021-06-09 21:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9d32780aa2a29ec870c3f737c51fa8b3 SHA-1: 5d02184d825c96172a7f44e660334ec4802dbf11 SHA-256: f02a2415dd2c33540b894d1ff25fdd8cc9218d665ddc15315a25939ad1184c8e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting an attempt to distribute further malicious content or phish for credentials. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://archism.ru/uplcv?utm_term=diploma+mechanical+engineering+machine+drawing+book+pdf PDF link annotation
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/20b2e0f0c51863c871eae7fdcf36039d/51904538027.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/011135188979.pdfIn PDF document text
    • http://eortak.com/img/fck_temp/file/xorupokudexob.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/021225424556.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/71a0843ae5705424aab0d794f563233e/jobez.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/10008757129.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/25362781530.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8b78b83121f954d4a8d5b8d19f0ee7a3/16016863292.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077a8dae2ab1---27132447171.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/qg0pi04o0cglsvk73ose6kf17b/tolamudawa.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/af47h1h3hjl1k3u18m8nkacq8e/79777559136.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4c3177a84---pujalebamofepasidifak.pdfIn PDF document text
    • http://quick-thailand.com/images/uploads/file/86346478412.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/21e86f7119a81bcd19c1b1ad0f84560c/lewaro.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/sagasisapunenanevumubuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA97 5684 bytes
SHA-256: 01f987e1ba6ecc9fb95d4b00992855d135bdafc78658e9307b256199632fea1a
font_01_sfnt_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 10320 bytes
SHA-256: 745911d862504efce7f4b6d20a0baa235a009c41cf228f2fe00e1571b80c758a

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