Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f07acf74ddfe19b…

MALICIOUS

PDF

102.2 KB Created: 2021-03-29 17:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 81029cab145ecebd43acd23b96b33717 SHA-1: 1c3aac2ae38f5a3aea526c616ec7c0df9810bc0e SHA-256: 7f07acf74ddfe19bcb70e6bd1f0a2e24cfc2c524c7e117ccd09a3ec2d5950c7f
206 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm and potential phishing lure. The document contains numerous external links, many hosted on disposable domains, directing users to seemingly legitimate documents like datasheets. The primary URL, https://jacksth.ru/award?keyword=cisco+2960+series+datasheet+pdf, is likely a gateway to a malicious payload or phishing content. No scripts were extracted, but the PDF structure and numerous external links suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/award?keyword=cisco+2960+series+datasheet+pdf PDF link annotation
    • https://cdn.sqhk.co/gitaligido/chaiJig/17860667768.pdfIn PDF document text
    • https://temizugejifo.weebly.com/uploads/1/3/1/3/131384470/lapebaxibakotaz.pdfIn PDF document text
    • https://febixitojujemo.weebly.com/uploads/1/3/4/4/134402622/dafifaxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369308/normal_5ffbd8bc28737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502920/normal_5fdc1b1bb6c44.pdfIn PDF document text
    • https://rodazikajoreme.weebly.com/uploads/1/3/0/8/130874285/63ff1c52e4d0b5f.pdfIn PDF document text
    • https://fedalovojuxunod.weebly.com/uploads/1/3/0/7/130775560/5059d2da41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409623/normal_5fe32dd628fdb.pdfIn PDF document text
    • https://bujubupe.weebly.com/uploads/1/3/1/4/131437121/miwukusosewiju.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/ejiKI3X/nidoxikanegovutimef.pdfIn PDF document text
    • http://fibutogu.mywebcommunity.org/business_proposal_sample.pdfIn PDF document text
    • https://dipidedi.weebly.com/uploads/1/3/2/8/132815933/tajotonadamigukitit.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/57548182627.pdfIn PDF document text
    • https://lutatodu.weebly.com/uploads/1/3/4/6/134697406/9643655.pdfIn PDF document text
    • https://vebupefipi.weebly.com/uploads/1/3/4/4/134497137/1720775.pdfIn PDF document text
    • https://jisetufazuv.weebly.com/uploads/1/3/5/3/135307323/wevoxirafazoluxuw.pdfIn PDF document text
    • https://zuramuvo.weebly.com/uploads/1/3/4/4/134480672/5f66a9235f90c2.pdfIn PDF document text
    • https://wobomiti.weebly.com/uploads/1/3/4/5/134501920/lewigizew-xedir-dixaxutimewi-rozivapusaxopo.pdfIn PDF document text
    • https://cdn.sqhk.co/fivufotimad/ZKiiHjh/maxpreps_high_school_football_scores_california.pdfIn PDF document text
    • https://mudodawi.weebly.com/uploads/1/3/4/6/134653299/zodozajutesofukikez.pdfIn PDF document text
    • https://nixotebiwozo.weebly.com/uploads/1/3/4/6/134667174/zenutikod-lajukujamuxizuw.pdfIn PDF document text
    • https://xifanelisiwokof.weebly.com/uploads/1/3/0/8/130874433/bafivofexig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wukevivetarapu.myartsonline.com/ritolafezowanuzejavo.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB1 5700 bytes
SHA-256: 822aa8c16f1bc015e6bd7620d4f1440acf480535985d89a544bdbf0c56afafbd
font_01_sfnt_off00016209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16209 11552 bytes
SHA-256: 0c7ec8f88607700c15a0ef710c9afd8c7c269a0b5e371d6e82fa2968a45853c7

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