Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ca110846201f52…

MALICIOUS

PDF

74.1 KB Created: 2021-03-05 07:30:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f325954a945eb5234e57937636eec94e SHA-1: 9ac52de0c534c47f30550fc4dad4bcd145831cda SHA-256: c1ca110846201f52fa0f134b209e07952f34a826aaebff2784881170a693f3a7
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to product searches, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=who+makes+the+best+wine+refrigerators PDF link annotation
    • http://xagelofitu.22web.org/rusujezozuxe.pdfIn PDF document text
    • http://rejasikega.scienceontheweb.net/samsung_50_inch_qled_4k_uhd_smart_tv_-_qn50q6dtafxza.pdfIn PDF document text
    • http://glawerry.online/7411718291792hcq.pdfIn PDF document text
    • http://experiment.website/ar_rahman_song_vande_mataram_freeccwsj.pdfIn PDF document text
    • http://ukrinsure.com/asus_rt-n12_d1_hard_resetjkjh6.pdfIn PDF document text
    • https://pudakelujoroju.weebly.com/uploads/1/3/0/7/130739680/8753144.pdfIn PDF document text
    • http://innov-cis.net/lagu_cover_asmara_2lk1aq.pdfIn PDF document text
    • http://cccckkkkkdd.space/pufejezumg45r2.pdfIn PDF document text
    • https://bemaxeviliw.weebly.com/uploads/1/3/4/4/134482954/e861715e4bb.pdfIn PDF document text
    • http://vitodibiwanezej.mypressonline.com/zoxebumalilakanoleferu.pdfIn PDF document text
    • https://zidadosivifaju.weebly.com/uploads/1/3/0/7/130775619/dewegolitijoxir-virozugavodove-xuwojavagifi-jewaxad.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/tamosibebefuve.pdfIn PDF document text
    • https://nagozexifetuli.weebly.com/uploads/1/3/4/3/134340384/samiwujusilokok.pdfIn PDF document text
    • http://rajajime.mypressonline.com/funutovu.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/lawixagigubojajabi.pdfIn PDF document text
    • http://gifagudilul.mypressonline.com/lijefubonog.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/xoguwavosuje/m5a78l-m_lx_plus_uefi.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/surah_ar_rahman.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/24107383890.pdfIn PDF document text
    • http://zogoxuf.atwebpages.com/46308445260.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/boxowinimuxuvadudebejowez.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/vukuzexo.pdfIn PDF document text
    • http://migegifixabo.rf.gd/hunger_games_book_set_barnes_and_noble.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_off0000e295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE295 5460 bytes
SHA-256: 2fa0a2ee9f77efac78dca76e5c2efa71cb34b9e64083a1fbfb4a07cef1d82cf0
font_01_sfnt_off0000f516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF516 11320 bytes
SHA-256: fba5fc66bf5e17951091a1769184f1b7769b3536d9776f84e22780a5e3d1b2fb

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