Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddfc7ce9a0e1672f…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 22:20:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: df58697b58faeadd20aa7a2da3e814f5 SHA-1: 2e53fe99d6e40dde2e0d522a9023405d82e7b869 SHA-256: ddfc7ce9a0e1672f8f4fc1880961a1ec693304061100eed2d39cc8c336a4b8d1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wix?keyword=formation+of+aldehydes+from+alcohols PDF link annotation
    • http://domsale.xyz/981956182225ke4k.pdfIn PDF document text
    • https://gojatoxemoniro.weebly.com/uploads/1/3/4/8/134894745/neguf.pdfIn PDF document text
    • https://napuximijagebi.weebly.com/uploads/1/3/4/7/134766840/bizuje-dobog-zawomifu-fusal.pdfIn PDF document text
    • http://ubsvp.com/5628694567jukxn.pdfIn PDF document text
    • http://xevigukek.iblogger.org/92440998584.pdfIn PDF document text
    • https://bimebupeku.weebly.com/uploads/1/3/4/7/134715010/0ce8a4b4acb0b.pdfIn PDF document text
    • http://liko-sneakers.com/anita_baker_songsxwuye.pdfIn PDF document text
    • http://myfoxing.online/vifobapiboxobdu0d.pdfIn PDF document text
    • https://jesomufufasak.weebly.com/uploads/1/3/1/8/131872286/kuvarepibigarep.pdfIn PDF document text
    • http://pipvip.ru/10585632411emhy9.pdfIn PDF document text
    • https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/jozogiwokixezazorol.pdfIn PDF document text
    • https://kigilejujagenit.weebly.com/uploads/1/3/1/4/131438309/681e6.pdfIn PDF document text
    • http://classicalnaturally.com/c_mvc_actionresult3kq6t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ximewilavabav.epizy.com/89837228846.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_off0000da3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3D 5320 bytes
SHA-256: 84caf0e5dc4a797961146f08f6db74189da105a31acb6825cb809f9f3dabb40f
font_01_sfnt_off0000ec2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2C 10260 bytes
SHA-256: fb082c4d8a289d60643e3a8e74e085f66533da8236f3715a9546da35c2723d75