Malicious PDF — malware analysis report

Static analysis result for SHA-256 4954cb6bab19892a…

MALICIOUS

PDF

69.9 KB Created: 2021-02-27 22:35:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ea091f47a4e4edc927d7d2f5c0711792 SHA-1: f38d9aedc703dec08338b37760e1cba80e2c5092 SHA-256: 4954cb6bab19892a8cfd91c711568f74de65e649d7acdb1d8bd4372af4250e92
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/award?keyword=audio+technica+at+lp60+bt+troubleshooting PDF link annotation
    • https://fuxexitir.weebly.com/uploads/1/3/4/0/134098624/jagedonu.pdfIn PDF document text
    • https://besugadofozoxi.weebly.com/uploads/1/3/5/3/135396803/voxoxokor_ralozavexadip.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/gib0lhb/puwejezitim.pdfIn PDF document text
    • https://mutuwafidiz.weebly.com/uploads/1/3/6/0/136095616/82c0e.pdfIn PDF document text
    • https://mefiremen.weebly.com/uploads/1/3/0/7/130776246/00a701dbc9976e0.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/ibghCje/68179104819.pdfIn PDF document text
    • https://luwigemo.weebly.com/uploads/1/3/4/5/134597726/sosokizikuwutuzazog.pdfIn PDF document text
    • https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/tedafeb-zuxugamaluziz-wikajoki.pdfIn PDF document text
    • https://kenolafopufa.weebly.com/uploads/1/3/4/5/134528829/vowotumodaxon.pdfIn PDF document text
    • https://kuvakikarubefi.weebly.com/uploads/1/3/1/3/131383404/8678359.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/jgjjgci/accu_battery.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/Ahfhhgc/harvest_moon_lyrics_neil_young_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391335/normal_5ff9cbcc4b3f7.pdfIn PDF document text
    • https://zabokibijeg.weebly.com/uploads/1/3/5/3/135350751/kesopu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutadomirezo.rf.gd/vetamitaxovaxiji.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/blessed_be_your_name_chords_piano.pdfIn PDF document text
    • http://vegewamofuxa.rf.gd/wedadasobubisezo.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_off0000d264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD264 5760 bytes
SHA-256: 85be39aa048f0fe637fe281bcebb2e587615960e02c8119a66718081201332a8
font_01_sfnt_off0000e5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EB 10732 bytes
SHA-256: 35c730155cb793f75f051c0360a38291a62a5d3eebcffe84823a4d2999a2132d