Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f446024c1dbdcc…

MALICIOUS

PDF

79.9 KB Created: 2021-02-08 09:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b0ca06d236367d403d1398267dddcafe SHA-1: e7d745cc87991a6746cfe0dc08dc89fa087fbe71 SHA-256: d6f446024c1dbdcc11d5e390f8e16dba80834ec3c6de0ac27a888c21371cc2ab
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=manualidades%20faciles%20y%20rapidas%20de%20navidad PDF link annotation
    • https://cdn.sqhk.co/pozigafo/fiajb7q/2017_football_recruits_espn.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/2Xijihi/napiroba.pdfIn PDF document text
    • https://warodimaziwini.weebly.com/uploads/1/3/4/6/134611971/zavale.pdfIn PDF document text
    • https://pavibizad.weebly.com/uploads/1/3/0/7/130740264/874688ade.pdfIn PDF document text
    • https://duludogom.weebly.com/uploads/1/3/4/6/134673238/1895248.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/jighfhc/pediwo.pdfIn PDF document text
    • https://xakediripikevul.weebly.com/uploads/1/3/4/3/134338645/luvupusito.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/eiihihh/joxagizovifofujebime.pdfIn PDF document text
    • https://wabelurotetef.weebly.com/uploads/1/3/4/6/134693048/jupiduluju_bikubisofujeget.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/vajefam/netflix_on_my_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/battlefront_2_capture_hask_reach_the_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/41048682923.pdfIn PDF document text
    • http://dinoxisajuz.rf.gd/formule_chimie_sulfate.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/pictograph_worksheets_printable.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/cornell_note_template_printable.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_off0000f9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C8 5316 bytes
SHA-256: 8e200498bd9efa35288980e18bc3a7c22b29889de9ee42d4ff3f00ddb1ccc1fa
font_01_sfnt_off00010c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C09 11368 bytes
SHA-256: 935b1821f7861e6c2c0cfca961ccaaf31241668caaca959276a1d0dd94f99193