Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a3df4f210c366f…

MALICIOUS

PDF

74.2 KB Created: 2021-02-11 01:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0495a6fe253e006fc13b77d249322664 SHA-1: fb2b12baba478f9ca46a86c67475b138222d748f SHA-256: d5a3df4f210c366f47282d916e90f0b46c7f5097bda37c825d79e86791810c2a
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/aws?utm_term=honda+gcv190+power+washer+manual PDF link annotation
    • https://cdn.sqhk.co/novigigexuxo/Kjesehg/jevojidi.pdfIn PDF document text
    • https://donikigegetala.weebly.com/uploads/1/3/4/3/134311768/0436aeccdd88369.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/98910238515.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/9J2gjHj/guess_the_emoji_movie.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/kofamifunuruja_mizedexawas_paluvesibewa.pdfIn PDF document text
    • https://cdn.sqhk.co/kowalaxu/xpsgfzR/75579218088.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/cf7jbl5/bang_bang_bang_lyrics_english_dreamcatcher.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/jugeiib/totally_ultimate_battle_simulator_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vavuduzika.epizy.com/soroneronitexob.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/ac_joint_arthritis_exercises.pdfIn PDF document text
    • http://pogedezibak.rf.gd/kawape.pdfIn PDF document text
    • http://kewivifonawati.epizy.com/combine_like_terms_with_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/gantz_perfect_answer_ending_explanation.pdfIn PDF document text
    • http://jipokogave.epizy.com/infamous_2nd_son_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/formation_barman_cocktail_belgique.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_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 5948 bytes
SHA-256: acb721593f7f067174798d5ea0c2f95231f74888253416186d34123650b2fe7f
font_01_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 10300 bytes
SHA-256: b995254999ef4ef536eba22cb9b03002ac774691eff76f42a2e3195c1bd22faf