Malicious PDF — malware analysis report

Static analysis result for SHA-256 cabe79fae3cd2ed6…

MALICIOUS

PDF

81.4 KB Created: 2021-03-01 18:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8548beb3e70044262ce4beeb84716682 SHA-1: 90bb11d0d410e0e271518ee0fd3712a52b4ea68f SHA-256: cabe79fae3cd2ed62e73f0791271a8bc896fe78d86ab54b7dcd7b89a92aa19c6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a malicious domain, identified by both heuristics and ClamAV as a phishing/trojan. The document body, though heavily obfuscated, suggests a lure related to a 'critical value calculator'. The presence of an external URI indicates an attempt to redirect the user to a potentially harmful site, likely for credential harvesting or malware delivery.

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 https://midufefew.ru/wix?keyword=critical+value+calculator+z
    • http://persequenteamsohbet.com/460792036xuwc2.pdf
    • http://stickerrus.ru/heroes_of_olympus_book_5_online_freet4t47.pdf
    • http://wurigakisedepov.iblogger.org/36683728763.pdf
    • https://mukekevujawova.weebly.com/uploads/1/3/0/9/130969498/758247.pdf
    • https://lonugawewubosil.weebly.com/uploads/1/3/4/6/134627014/radifi-revinaxurud.pdf
    • http://f13x.xyz/arena_closer_hackdo25u.pdf
    • http://dutebolidetol.iblogger.org/tomopuvigok.pdf
    • http://linavaluviriv.getenjoyment.net/94978399216.pdf
    • http://wotidoteked.mywebcommunity.org/lededimaxugalirasifoja.pdf
    • http://italy50wow.pro/jonathan_livingston_seagull_summaryz8w2n.pdf
    • http://car-test.pro/321644926865a4wo.pdf
    • http://centerverifybadge.com/kabokumojisebusurur08ti7.pdf
    • http://ourfanz.com/pegaxifemibabonaworujaxiebadz.pdf
    • https://pikotawikeju.weebly.com/uploads/1/3/4/4/134496208/156345.pdf
    • http://bufo.online/the_witch_scripti5fe3.pdf
    • https://tivufotevomok.weebly.com/uploads/1/3/2/6/132682035/mokodeba.pdf
    • http://cg-designer.xyz/pokemon_games_for_android_without_emulatorcx5tw.pdf
    • http://wamuwosola.mygamesonline.org/54127709641.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://muluwokixo.onlinewebshop.net/lasitepejitukijezoxe.pdf
    • http://silapopo.epizy.com/bevel_gear_3d.pdf
    • http://vufigenetusanu.epizy.com/wabusaganezasuxitoz.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_off0000f0b9.bin
b963273d2e0fdd51e38741bec0b61994276f2b61f6c21bc6ce7552b88e150f55
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B9 4524 bytes
font_01_sfnt_off00010039.bin
b9643dcd5ae95733c7a026dcc14fdbdd7dee3189b680e992395d5cd35ed738e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x10039 13144 bytes
font_02_sfnt_off00012a8c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A8C 4324 bytes