Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0dce83920654415…

MALICIOUS

PDF

87.9 KB Created: 2021-03-16 04:49:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69862edf38593e7f25cd6e143fc1190c SHA-1: 758065f3c6a2ead2a7be0a037d1f474392a4e226 SHA-256: c0dce83920654415237b09f3ec60d3a680f200724368b020e3353273f1d08359
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a malicious domain, identified by both heuristics and a machine learning classifier. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to '24 consonant sounds and examples pdf', aiming to trick users into visiting the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 https://maypoin.ru/award?keyword=24+consonant+sounds+and+examples+pdf
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcc4d52245f6.pdf
    • https://peniwifagupe.weebly.com/uploads/1/3/0/7/130738894/nifefujisiziriralilu.pdf
    • https://cdn-cms.f-static.net/uploads/4446272/normal_603b2dc1bb3f5.pdf
    • https://static.s123-cdn-static.com/uploads/4417817/normal_5fc9dfd74863c.pdf
    • https://static.s123-cdn-static.com/uploads/4380890/normal_5fdf62d5f10c5.pdf
    • http://letxxnx.org/choodiyan_full_song_pagalworldt9r9t.pdf
    • http://foyou.store/literatura_conceptos_basicosjedcg.pdf
    • http://halfraire.xyz/astroneer_planet_resourcesh5nnk.pdf
    • https://gitikaru.weebly.com/uploads/1/3/4/9/134901111/6008031.pdf
    • https://tuxupurevulivi.weebly.com/uploads/1/3/0/8/130813143/8924a.pdf
    • https://cdn-cms.f-static.net/uploads/4375507/normal_60500a0424d24.pdf
    • http://ledy66.net/amazing_grace_classical_guitarfc7nw.pdf
    • http://metazoaapc.fun/18060739240mclux.pdf
    • https://wipusometava.weebly.com/uploads/1/3/4/8/134846349/a1e96df.pdf
    • https://cdn-cms.f-static.net/uploads/4489422/normal_603752200bba2.pdf
    • https://static.s123-cdn-static.com/uploads/4487208/normal_5fe2b3ad8917b.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jaxegowanav.rf.gd/3322570808.pdf
    • https://s3.amazonaws.com/nijudow/77641526111.pdf
    • http://namerunu.rf.gd/63131669917.pdf
    • https://s3.amazonaws.com/vatakefojunib/xamotevamibug.pdf
    • https://s3.amazonaws.com/jivuxo/las_cronicas_de_narnia_4.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_off0000f785.bin
6d093ae866aec059f7ba0e02be72f1e1e55dd3b798f0bc4fb558cc4ee8715e1a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF785 1708 bytes
font_01_sfnt_off00010009.bin
024cb90597b69eae8ee0343217f2f14dc386cc6f5337d230f2d61a3574bf6b37
pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 5400 bytes
font_02_sfnt_off00011266.bin
76c47d2e777de37fe864d96a941000c1b6fd5946bf04a330cb5f293d0ae4d1bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x11266 20952 bytes