Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc5ad9f60de54d…

MALICIOUS

PDF

101.4 KB Created: 2021-04-19 17:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 116ecbe4535d58c14bee028473006aaf SHA-1: 4a0a1db3bd02a6f86ba79117d16afc91e1f9499f SHA-256: c5dc5ad9f60de54d4dddc4fb561d38386d5673d99c579053b0a303ec6c12a459
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains a large number of embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or content-luring scheme. The presence of 'utm_term' parameters in some URLs further supports the idea of tracking user clicks for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 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://pelibifir.ru/strik?utm_term=marquis+de+sade+120+days+of+sodom+pdf PDF link annotation
    • https://cdn.sqhk.co/tuwagezo/yiijcje/bakagozanofutibixaxovud.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/iiBjcgj/jefonixezotokenoxalu.pdfIn PDF document text
    • http://vimabanu.sportsontheweb.net/16725602866.pdfIn PDF document text
    • http://dutov.org/my_fathers_dragon_ar_reading_leveltyeso.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/2487702095.pdfIn PDF document text
    • http://healthytrands.com/91826881876puamr.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/hfHu4c7/funny_gifts_for_mom_amazon.pdfIn PDF document text
    • http://timinome.getenjoyment.net/jomon.pdfIn PDF document text
    • http://iminn.ru/dinosazo0c2xp.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/NCQvtja/medelitalul.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/hhhcnge/modako.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/n3LK8ha/rocket_launch_2020_video.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/23864560703.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/iajezaS/wupoxabagud.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/ifl5gdZ/60538128415.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/8hdjcji/american_jail_break_block_strike_survival_games.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/im5qja5/ptk_biologi_sma_kelas_x.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/9HjaoXn/stickfight_archer_mod_apk_unlimited_money_and_gems.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/gouhgsY/dolez.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/ggnjfV9/pet_paradise_winter_garden_winter_garden_fl.pdfIn PDF document text
    • http://fakts.design/23997267520aj027.pdfIn PDF document text
    • http://nijepatexosanus.medianewsonline.com/calibre_to_epub.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/jaHigcQ/51953754057.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/english_phonetics_and_phonology_an_introduction_philip_carr.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/58355199583.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/happy_birthday_wishes_for_girlfriend_video.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_off00014f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F25 5716 bytes
SHA-256: b85df5ed54bcd42de949766d60d0f94e1727ec76b67d9d4311c7280c16806884
font_01_sfnt_off00016296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16296 11296 bytes
SHA-256: e6567855ebe60ff3a0f83551e3d0b2e13730a9398e36c235fe4cbfa1fc227dec

Open this report in the interactive analyzer, or submit your own file for analysis.