Malicious PDF — malware analysis report

Static analysis result for SHA-256 e023466b806ee7fb…

MALICIOUS

PDF

70.9 KB Created: 2021-05-12 16:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 99adda5ac84599038de13b641c618d8e SHA-1: 9bda58ced63dda61a0820c2df0b350583ee6d49c SHA-256: e023466b806ee7fb8fd40493bae847f686ee953bb2e3be93665fa3b909026789
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, with the primary lure being a "Rascal 600 scooter manual". The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded links, such as https://xezojetit.ru/strik?utm_term=rascal+600+scooter+manual, are likely used to redirect users to malicious sites or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=rascal+600+scooter+manual PDF link annotation
    • https://cdn.sqhk.co/laloropaki/hG53hhF/dining_room_chairs_walmart_canada.pdfIn PDF document text
    • https://terenedadobi.weebly.com/uploads/1/3/5/9/135961601/6932604.pdfIn PDF document text
    • https://tatisosef.weebly.com/uploads/1/3/5/3/135333589/xukemelemo_domosab_sefabu.pdfIn PDF document text
    • https://cdn.sqhk.co/pesarukogi/fv5IWhe/biomes_in_southern_africa.pdfIn PDF document text
    • https://mopebewugo.weebly.com/uploads/1/3/0/7/130776026/9122cbebc.pdfIn PDF document text
    • https://xufalawat.weebly.com/uploads/1/3/0/8/130814535/9222928.pdfIn PDF document text
    • http://ipai.online/public_relations_officer_duties_in_school9oy6k.pdfIn PDF document text
    • http://zuxegesa.iblogger.org/46629860934.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/QQhdPgu/snowball_fight_free_whack-_a-_mole_game.pdfIn PDF document text
    • https://cdn.sqhk.co/nufuwijili/VHgfisZ/25034395133.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/idhV88J/22029564680.pdfIn PDF document text
    • http://libralab.digital/9939537537850q05.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dazemi/jawixojipijuguwoda.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/retukadumevukafozefosebo.pdfIn PDF document text
    • http://zumuwojik.rf.gd/bluestacks_app_player_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/the_executive_bureaucracy_crossword_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/48510946065.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/bitcoin_wallet_apkmirror.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/wijutezup.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/5583786501.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/kahoot_hack_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC72 5084 bytes
SHA-256: 7582b3d77d43f92c7a390d5a6a5877b17b9fc73ff7f83773cd95aafa5226f20c
font_01_sfnt_off0000dd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8D 10180 bytes
SHA-256: f135a98fa048859977df2f60d3019efdf760599052c87bade4c31a8d21e619c0
font_02_sfnt_off0001001b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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