Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6f9d13127d94cb…

MALICIOUS

PDF

69.6 KB Created: 2021-06-12 02:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 25d273c556baba6813190803a7cf8690 SHA-1: e9a08e314f6ca6242e7c39b836126520d32ccaac SHA-256: 0d6f9d13127d94cb7ed5b6cc43387df681179c67f7d2cf4e7362dce9a9438e5e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://nomylo.ru/pbw?utm_term=gizmo+mouse+genetics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446166/normal_60c3e85688c23.pdfIn PDF document text
    • https://vepazigomopu.weebly.com/uploads/1/3/4/3/134398405/xabofifasikizal-vovuxutuzozob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496810/normal_5ffb85c9a3d60.pdfIn PDF document text
    • https://jelopujepifo.weebly.com/uploads/1/3/4/3/134341958/josagupoxawo.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4481157/normal_60b4c4bb2bea2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414331/normal_606c77c927a6c.pdfIn PDF document text
    • https://kawokuxaletufe.weebly.com/uploads/1/3/4/3/134345859/836b79074.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/a7dbe11b96.pdfIn PDF document text
    • https://watibovogop.weebly.com/uploads/1/3/4/8/134876481/db1657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475847/normal_60058553f40d4.pdfIn PDF document text
    • https://bitepurumuxuz.weebly.com/uploads/1/3/1/3/131378930/lugavawotukipuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467032/normal_5fda628435af3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470029/normal_5ffb83b0e9076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_60bf33f1a1c1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xorunezagu.pbworks.com/w/file/fetch/144438753/pinky_dinky_doo_what_is_that_sound_wiki.pdfIn PDF document text
    • http://fafukite.pbworks.com/w/file/fetch/145164630/nikoraxoxonud.pdfIn PDF document text
    • http://letonepamusi.pbworks.com/f/67849759610.pdfIn PDF document text
    • http://vikuzafofuko.pbworks.com/f/sesiwowemilunomeg.pdfIn PDF document text
    • http://fafukite.pbworks.com/f/rinekelolugu.pdfIn PDF document text
    • http://febamizilaw.pbworks.com/f/6515459219.pdfIn PDF document text
    • http://bezawagiga.pbworks.com/f/cant_get_android_auto_to_work.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_off0000d331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD331 4860 bytes
SHA-256: a744afc4e4d1481dc846de4698c786d0af073f1504668351e01a06eaf1a9052c
font_01_sfnt_off0000e3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C3 11024 bytes
SHA-256: c7567a2209128fe1fcfe648ac3632ce0064e35db3b87223222826b8cbbea0ece

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