Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de9c3079420bb28…

MALICIOUS

PDF

94.0 KB Created: 2021-03-01 22:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0316a264e4eadeb99f638bfcf81a7174 SHA-1: 91bc1af5dd9a36aa0fcb8d6c17360d7fb8840d6b SHA-256: 0de9c3079420bb288f9788b6a36677cfb4e8fe5092fa9669e586a7e9b0b1406d
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO spam campaign. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

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://bologen.ru/wix?keyword=tamagotchi+on+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408177/normal_5fd9600fafe1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_603caedec7576.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/f1nBq6K/10_panel_std_test_at_home.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5feb09b2cb8f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_6037ede3157f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486200/normal_602766b0315ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493221/normal_5ff81f691b578.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/a2ijbYg/fojiroronebe.pdfIn PDF document text
    • https://woxamaxepid.weebly.com/uploads/1/3/0/7/130776503/c4327d40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447253/normal_60012ebebe3b4.pdfIn PDF document text
    • https://dofolemabumef.weebly.com/uploads/1/3/4/4/134458616/jibevawogujuvivul.pdfIn PDF document text
    • https://setopotuvojinow.weebly.com/uploads/1/3/4/8/134877086/zabale-xabaravepile-pulekimemur-bivomesurizer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485696/normal_5ff54f5e6c883.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387704/normal_5ff3d22584dbd.pdfIn PDF document text
    • https://rawunixu.weebly.com/uploads/1/3/4/5/134527334/luzazosupi-fojit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485163/normal_6015fcb922a19.pdfIn PDF document text
    • https://xobijuveja.weebly.com/uploads/1/3/1/6/131606615/lafot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EF 20060 bytes
SHA-256: 7c7ac9671f91cc46960b653f4131b2d98ba49ac25586ccbe0a41c2e5d083b129
font_01_sfnt_off0001374e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1374E 4996 bytes
SHA-256: 8e8db193120646067675f3296168551c325bd75755dde2f2be6504d7dfb464b2
font_02_sfnt_off0001482a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1482A 10016 bytes
SHA-256: 23e2c257b0b67f9502c0cae5dea329fbfaed69f7329a3494453d66df9564909a

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