Malicious PDF — malware analysis report

Static analysis result for SHA-256 951598b7278431bd…

MALICIOUS

PDF

69.5 KB Created: 2021-01-24 11:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6cb58dce96671b49d456a3f3985263de SHA-1: bed75e1eb90407f8ca6373bd4c6f0d6cec0b6132 SHA-256: 951598b7278431bd03d79b81397debac158598db09d44075c7a2a7263d0aa2f6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://bologen.ru/wb?keyword=world%20cricket%20championship%20lt%20apk%20old%20version PDF link annotation
    • https://zujavezamuni.weebly.com/uploads/1/3/0/9/130969293/xiliwaxugamiletuz.pdfIn PDF document text
    • https://cdn.sqhk.co/zisiribamen/g2hejyx/hangouts_video_call_black_screen.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/LhigjBK/mobizen_mirroring_pc_crack.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/jicjcie/watch_nfl_games_live_stream_free_online.pdfIn PDF document text
    • https://xigobiniliw.weebly.com/uploads/1/3/5/2/135298108/ladozelibopewin-segotopibogumuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365661/normal_5fc8259115dd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5fddb65e3991b.pdfIn PDF document text
    • https://cdn.sqhk.co/zegetaru/cQxjax7/pinball_mania_classic_ball_flipper_arcade_games.pdfIn PDF document text
    • https://nogekapufininut.weebly.com/uploads/1/3/3/9/133997605/wolizatapupupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453740/normal_5ff4e14a349ed.pdfIn PDF document text
    • http://fosukimiten.22web.org/86793734424.pdfIn PDF document text
    • https://cdn.sqhk.co/kibedutej/cGjhhfa/kuxujipozulovow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tunowik.epizy.com/sefabedokaru.pdfIn PDF document text
    • http://titasukutisun.epizy.com/sad_cartoon_gif.pdfIn PDF document text
    • http://voxinuxo.epizy.com/castlevania_aria_of_sorrow_hack.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_off0000d236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD236 5448 bytes
SHA-256: 2b7d559dbc3052c8286f62270ded20d51f27ac1435e6db8f4d0d7cb7f2d4fba2
font_01_sfnt_off0000e4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A2 10572 bytes
SHA-256: b440bb31e82c5b10b75a9d912896d23bb69b88e4bbde19253920b5c91b19f914