Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f15113ead532ed1…

MALICIOUS

PDF

74.9 KB Created: 2021-05-15 17:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a154722dcbf7b1ef63eaf5c90b94e44 SHA-1: 543af57e5c0a3d8b69fa6800e831ffef0859a9af SHA-256: 9f15113ead532ed1184852a43fb3cb585d69dd1defeae458bf6452c3f83d64c5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, suggests a lure related to job salaries. Several unknown URLs were extracted, pointing to potential phishing or malware distribution sites. No scripts were explicitly extracted, but the PDF structure and heuristics suggest it may contain embedded JavaScript for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://wefabawatewe.22web.org/jirogab.pdf
    • http://jebifawulu.mywebcommunity.org/vetowutobupufesulolikiboz.pdf
    • https://vefonero.weebly.com/uploads/1/3/1/0/131070196/90a609f702ee955.pdf
    • http://diporesorojina.scienceontheweb.net/awaken_the_giant_within_drive.pdf
    • http://fipagolanikobax.mygamesonline.org/pl_sql_developer_resume_4_years_experience.pdf
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/763707.pdf
    • http://puduvab.sportsontheweb.net/great_gatsby.pdf
    • https://xiriwedonup.weebly.com/uploads/1/3/4/2/134265341/laxatepake.pdf
    • http://fikosarodone.medianewsonline.com/calisthenicmovement_beginner.pdf
    • http://nufivuzelikonax.getenjoyment.net/77741202843.pdf
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/2046315.pdf
    • http://kerutugizuxig.mygamesonline.org/gogeki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://feedproxy.google.com/~r/wb/ENAH/~3/o_fyKxYoRT8/wb?keyword=material%20science%20jobs%20salary
    • http://fabavokawibawo.epizy.com/what_size_carry_on_baggage_for_united_airlines.pdf
    • http://gagisejokunego.rf.gd/black_ice_frostbear_fnaf.pdf
    • http://rewosawobew.rf.gd/netevopavefi.pdf
    • http://gixarewujedel.atwebpages.com/7979008805.pdf
    • http://wejivuwipo.epizy.com/komuregoxosejag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc8b.bin
4eab0e52dec8a0c029d27f4fc1d5b97e75a6cb051d341fff1b202f8fe8010fda
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 4904 bytes
font_01_sfnt_off0000ed44.bin
f1ee1195703d62bcffee548bab0d4bfa0fe721524f355a23c7ed0eee134cf382
pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 10344 bytes
font_02_sfnt_off00011066.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11066 4324 bytes