Malicious PDF — malware analysis report

Static analysis result for SHA-256 8106b8c993c20c8a…

MALICIOUS

PDF

73.7 KB Created: 2021-01-25 11:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ce0b60c024d8232c6487e79353fe7d5e SHA-1: 4b6293601d4b479cb49b452a9b9cf01e6cc2c9f0 SHA-256: 8106b8c993c20c8a7ea8fb42f1832e0cbc6ae62adf1fb531786a0013c9e8c0ef
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=examples%20of%20smart%20goals%20for%20soccer%20players PDF link annotation
    • https://cdn.sqhk.co/jezuleku/Dzwjijj/43999108065.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/ijibFmE/inside_out_movie_poster.pdfIn PDF document text
    • https://zojegidaluvimov.weebly.com/uploads/1/3/4/1/134109086/5932721.pdfIn PDF document text
    • https://cdn.sqhk.co/tuforalogidu/iiigeZI/make_sentence_using_word_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/gfjaNhe/32843989232.pdfIn PDF document text
    • https://gexasibe.weebly.com/uploads/1/3/5/3/135306593/2938368.pdfIn PDF document text
    • https://muvisodujop.weebly.com/uploads/1/3/4/3/134358588/2709024.pdfIn PDF document text
    • https://fidexirubopuzer.weebly.com/uploads/1/3/2/8/132815065/04b92.pdfIn PDF document text
    • https://noremovex.weebly.com/uploads/1/3/4/8/134883944/lovimesujub_wisaderen.pdfIn PDF document text
    • https://rujedupexiveviz.weebly.com/uploads/1/3/4/8/134874221/sinoripuj.pdfIn PDF document text
    • https://giwulotasika.weebly.com/uploads/1/3/1/4/131411199/dfd28d27b068.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/gjaJr5S/xiwijepokusadakip.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/kumasala/24245308200.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/zulewivezededudo.pdfIn PDF document text
    • http://vekamujibatebig.rf.gd/catarina_and_the_others_film.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_off0000e47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47B 5460 bytes
SHA-256: 07e5ce7cb88839ce3c035688239d9c822ae11668476b00db3c30064835888972
font_01_sfnt_off0000f70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70F 10216 bytes
SHA-256: 37f675b5d15dbef761edc678280efa79a39111041c5b76ec2522471e6b9bbd36