Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4cb3831668a4b2…

MALICIOUS

PDF

79.1 KB Created: 2021-03-15 16:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a34ce99dddee19100353c8d90805b25b SHA-1: bf502c0cf29054c798ec4dc0f5d2045d1e9519b5 SHA-256: 1f4cb3831668a4b20444572bd5b40b56ddeaa421c023e056a43fa39603330506
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a specific URL related to an 'epson wf 2530 printer driver' indicates a lure to download potentially unwanted or malicious software. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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://seumenha.ru/strik?utm_term=epson+wf+2530+printer+driver PDF link annotation
    • https://rozomibevepozif.weebly.com/uploads/1/3/0/7/130775668/rakaxunusiterom.pdfIn PDF document text
    • https://dikefurilixi.weebly.com/uploads/1/3/4/6/134684794/6855407.pdfIn PDF document text
    • http://vienvozvrat.site/pet_shop_jojo_fighting_gamel3lwq.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/3641232.pdfIn PDF document text
    • https://nokogijesa.weebly.com/uploads/1/3/1/4/131452879/e0f358169aad.pdfIn PDF document text
    • https://pogipusuzifu.weebly.com/uploads/1/3/4/8/134869227/turobaxojuki.pdfIn PDF document text
    • https://luwumevawosa.weebly.com/uploads/1/3/5/3/135322316/torunopaxoxa.pdfIn PDF document text
    • https://pawusavexamase.weebly.com/uploads/1/3/0/8/130813618/mapajejolut_muxurusatulu_navabawo_tirefagopefi.pdfIn PDF document text
    • https://mapatujil.weebly.com/uploads/1/3/1/4/131454051/rageso.pdfIn PDF document text
    • http://bitcoins-profits.com/zirodwnlq8.pdfIn PDF document text
    • https://rigagebefizo.weebly.com/uploads/1/3/4/6/134631069/musiroxive-gadapuviza-zejomazevigus.pdfIn PDF document text
    • https://beburasitowetu.weebly.com/uploads/1/3/0/9/130969608/fa1705455.pdfIn PDF document text
    • http://uggi-ugg.com/makogazeburinuwukilapugulcgofl.pdfIn PDF document text
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/xifage.pdfIn PDF document text
    • http://excschool.ru/1991_champion_bass_boat_owners_manualdx385.pdfIn PDF document text
    • http://ubzvp.com/fibajujamepiys5ga.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/widiku/how_to_train_for_your_first_crossfit_competition.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/pretty_bhullar_songs_free.pdfIn PDF document text
    • http://lifarodanudu.rf.gd/lopulaxifesujibat.pdfIn PDF document text
    • http://dajajubofu.rf.gd/68723842876.pdfIn PDF document text
    • http://kibowetesuve.rf.gd/pekanu.pdfIn PDF document text
    • http://muzeduv.rf.gd/pabumubotonodojekazig.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/loxupepom.pdfIn PDF document text
    • http://rakejobik.epizy.com/84309863202.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_off0000f707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF707 5464 bytes
SHA-256: 767b0f77bb62dd6ba77cfa605d644365c24bf400c4e838b1d53ebeebab679347
font_01_sfnt_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 11052 bytes
SHA-256: f56de43d745082ed483e93f2f5b7a492c22ab1deb489cd083d408f5d271e14d5