Malicious PDF — malware analysis report

Static analysis result for SHA-256 35baa9a399c3515a…

MALICIOUS

PDF

70.7 KB Created: 2021-02-19 18:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2cb97eff5d044e9199a5ea292678a0c3 SHA-1: 7279f8fd0180a7897fdc2ac9990dc65f59a1729c SHA-256: 35baa9a399c3515a9ce392d5788b18ab66b54c023113fb44ae414f6cff3c2e66
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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/123?utm_term=fluke+77+multimeter+service+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417315/normal_601d3be616daf.pdfIn PDF document text
    • https://cdn.sqhk.co/desavusomo/uhg5rfV/time_gap_hidden_object_mystery_walkthrough.pdfIn PDF document text
    • https://vixixufabajuwe.weebly.com/uploads/1/3/1/1/131163632/vulafe.pdfIn PDF document text
    • http://omshop.space/xemoduwamuxikabitujcs53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485580/normal_5fc6c21442586.pdfIn PDF document text
    • http://smeshnoykir.space/kerufokq310.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/AcEhacA/72461752000.pdfIn PDF document text
    • https://popewike.weebly.com/uploads/1/3/1/4/131407195/valewabatosi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491725/normal_6011a0f3a6551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_601bf9e647a93.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/liehb0J/rabiwarukizesezet.pdfIn PDF document text
    • https://cdn.sqhk.co/mupijuwo/yihgdN1/rush_hour_bus_minneapolis.pdfIn PDF document text
    • http://geniusenglish.space/gisewazofaguvowutolcaw1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/ansys_cfx_student_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/zovip.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_off0000d723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD723 5104 bytes
SHA-256: 1270581b255b5a681ce31d10c7d2ecff1b75579b3be532c590419b2304cccef1
font_01_sfnt_off0000e876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE876 10992 bytes
SHA-256: 060efc3156d936bbf5c10528d37d20781870f6e1be86d168b4a1039665bc4a98