Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a55583dfa6a71f…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 09:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c17c86dd3bc454a4f4358ac0c349d57d SHA-1: e19716c4fc166679fddf2043aa57f83fe554bac7 SHA-256: 27a55583dfa6a71f7dd68abb4650731d3a13707bae342b5cb45c9fa140c32110
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://mezovuduw.ru/award?keyword=what+is+network+planning+in+project+management PDF link annotation
    • https://cdn.sqhk.co/vukixukafoga/wjfZIhd/27015508393.pdfIn PDF document text
    • https://gasomuvujutomeb.weebly.com/uploads/1/3/4/3/134356107/56c7b.pdfIn PDF document text
    • http://prizinsta365.site/toxaxezaroxoviu9363.pdfIn PDF document text
    • http://0fruit.space/vinudepovoj2l33.pdfIn PDF document text
    • http://serusidam.iblogger.org/tajolitititebizovusezibom.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/bJGhfgd/steampunk_style_boots.pdfIn PDF document text
    • https://zonujonuwug.weebly.com/uploads/1/3/4/3/134309714/e1389.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/GhdaGib/does_fox_sports_go_stream_nfl_games.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/talanotedemowereravu.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/1Njqpy0/75834914050.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/pulalepixexizawixosofahft2h.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/5335713.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/Dj8jija/crossfire_2_vs_diamondback_hp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojegopuda.rf.gd/brave_soul_swim_shorts_size_guide.pdfIn PDF document text
    • http://kazaxese.epizy.com/5._snf_blme_ilemi_testleri.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_off0000e15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15B 5592 bytes
SHA-256: 93956db89c0a5f4938475ba2f66385ee98d6dcc8566cd3342561c12232d82f55
font_01_sfnt_off0000f459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF459 10540 bytes
SHA-256: cfe894782683d2480c071445c45713d48d1635bfa8fb35340fc02ab6d82bbb9a