Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e1a8fe9532812c…

MALICIOUS

PDF

75.8 KB Created: 2021-03-08 21:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0317c03facafec16940d290dd634e171 SHA-1: 26d7028c445508a534887688c601c4c11d4b669c SHA-256: f6e1a8fe9532812c4dbc2dd1ee3c244afe68c6858e19d6a594a1cc9ee490395a
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains or link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to URLs and potentially lures, reinforcing the phishing/malware distribution intent.

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://ponafet.ru/strik?utm_term=can+you+make+a+pizza+without+yeast PDF link annotation
    • http://mugisawitunolaf.iblogger.org/new_testament_bible_books_in_order.pdfIn PDF document text
    • https://zuxomizo.weebly.com/uploads/1/3/2/7/132710603/sovadifinig.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/kavodudf1poq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505326/normal_60162854236f7.pdfIn PDF document text
    • http://goshop32.site/tamil_movie_rockers_telugu_2019d1p5q.pdfIn PDF document text
    • https://gawosiluzetur.weebly.com/uploads/1/3/4/6/134631715/juwuz.pdfIn PDF document text
    • http://ompala.store/social_psychology_book_myershawgk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485457/normal_60297dace2d74.pdfIn PDF document text
    • https://birirewenojitu.weebly.com/uploads/1/3/0/8/130813362/xolavisozalu.pdfIn PDF document text
    • http://lynciguest.com/maze_runner_the_scorch_trials_full_movie_download_in_hindi_300mb6dfqj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486566/normal_5ff4591f94e4b.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/define_primal_fear.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422627/normal_5fca0b96c89e1.pdfIn PDF document text
    • https://vadizomozizi.weebly.com/uploads/1/3/5/4/135400682/xapeg.pdfIn PDF document text
    • https://fuxorufuno.weebly.com/uploads/1/3/4/8/134857832/ritijedoxub-xinazu.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/karusepizavewonufuwoxojoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gelonixaj.rf.gd/luzemulolojusubodo.pdfIn PDF document text
    • http://jifurixinomox.rf.gd/50333553099.pdfIn PDF document text
    • http://sasuwirakib.rf.gd/tixud.pdfIn PDF document text
    • http://juvegebufu.epizy.com/werufaxememedotaxe.pdfIn PDF document text
    • http://meduzifovum.epizy.com/63264032429.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_off0000ec2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2E 5144 bytes
SHA-256: 190f280adba07d25c5ab543e5ec3a9dbfce162b9d541860201abf50eb89d3bfe
font_01_sfnt_off0000fdac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAC 10808 bytes
SHA-256: ed0f12d2611164a6ade171424f704edc723b1ff382857cf375915f648ea2f203

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