Malicious PDF — malware analysis report

Static analysis result for SHA-256 c866d73374bcfb02…

MALICIOUS

PDF

66.7 KB Created: 2021-03-25 06:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bed95f8581a20322bf5b37a04a854578 SHA-1: c457ae4de08c8db86ddc74c2a3a830a5faeb7144 SHA-256: c866d73374bcfb026d95f3d36faa1e0d328199ba9420b3693585ee8b5909bff6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a likely attempt to distribute malicious content or engage in SEO abuse. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest a phishing or scam campaign designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://xezojetit.ru/award?keyword=automobile+magazine+pdf+download PDF link annotation
    • http://kakorofiwe.22web.org/international_journal_of_autonomous_and_adaptive_communications_systems_impact_factor.pdfIn PDF document text
    • https://jarurozo.weebly.com/uploads/1/3/5/3/135320013/5928812.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/gisizefudaroxuxobefaxofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465006/normal_60464f69c998b.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/17631956395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384316/normal_6017620e656df.pdfIn PDF document text
    • https://bojozavo.weebly.com/uploads/1/3/0/7/130740433/bumozikivuf.pdfIn PDF document text
    • http://vejenov.iblogger.org/likaludew.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/xibaso_zavepoti.pdfIn PDF document text
    • http://xadexawufomovi.sportsontheweb.net/falefevamov.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/98874737389.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/ritoma/dabibarofupavume.pdfIn PDF document text
    • http://lojogonofar.rf.gd/33654225665.pdfIn PDF document text
    • http://zotugudusapufa.rf.gd/zedapulikakusulimemu.pdfIn PDF document text
    • http://wirokafimuda.epizy.com/anaclitic_depression.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/9834005801.pdfIn PDF document text
    • http://xuvufajozurez.rf.gd/kovixubodozomazaxawe.pdfIn PDF document text
    • http://kopurelotalad.onlinewebshop.net/7685681615.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/65046582269.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/sasojiramedabipidukeviwul.pdfIn PDF document text
    • http://diwifesatikebak.epizy.com/best_public_speaking_topics_for_students.pdfIn PDF document text
    • http://tonunipuwe.rf.gd/10703127123.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/how_old_are_the_characters_in_war_and_peace.pdfIn PDF document text
    • http://nixefafezas.rf.gd/joy_of_sex_book_review.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_off0000c868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC868 5360 bytes
SHA-256: b37b7762b06dcb2f1886d67bc70894b981ce7856663c7156b8b6f6caeb1b43c0
font_01_sfnt_off0000daac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAC 10032 bytes
SHA-256: 10336995f577e8e5fbe37f98973262a0a36efbabdc92c37e7539fe89a0b47ad8

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