Malicious PDF — malware analysis report

Static analysis result for SHA-256 700f61f09cd3b33b…

MALICIOUS

PDF

71.7 KB Created: 2021-02-15 23:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 216aff6fd4ea6d345d4c747fce8423ec SHA-1: cabcecf061f98ee19b3bbd9d16990dce8a1c4fc4 SHA-256: 700f61f09cd3b33b52de3c1c804b80c2ebb295640ad97cc2ee4d618ba629ac5f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. Heuristics indicate these links are part of a link farm designed to obscure malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=how+to+load+browning+bps In PDF document text
    • http://xaxebegolozagu.iblogger.org/dowalidolarigusapevisowu.pdfIn PDF document text
    • https://juwexulomo.weebly.com/uploads/1/3/4/3/134385858/riwijakipetul.pdfIn PDF document text
    • http://rocketdocs.us/coulomb_s_law_practice_answer_keyxgehb.pdfIn PDF document text
    • https://movalibixijol.weebly.com/uploads/1/3/2/6/132682530/jurulaveb-larefevatezerir-wowavagu-jelezi.pdfIn PDF document text
    • http://service-hire.com/world_war_1_dates_start_and_end7p0n1.pdfIn PDF document text
    • http://naturka.space/40k_codex_freeq3hak.pdfIn PDF document text
    • http://zinifezabi.iblogger.org/64257008634.pdfIn PDF document text
    • http://sunny-web.ru/pilar_franco_aguilerayg19k.pdfIn PDF document text
    • https://wuzovogupo.weebly.com/uploads/1/3/4/7/134720757/nokiteza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5fc993d101427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496014/normal_5fd34f177af2d.pdfIn PDF document text
    • http://procripton.com/benchmark_performance_tool1sfw3.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/lerokepojobap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tujufevowupise.epizy.com/kirumunutonoxedumotafe.pdfIn PDF document text
    • http://xatudoxi.epizy.com/before_sunrise_movie_400mb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD15 5320 bytes
SHA-256: 746f8f94a5c8a0ae5b4bbff2461392db1edb3f7a017cf7b9bb9a00e682911683
font_01_sfnt_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 10208 bytes
SHA-256: 8e11bf3244d45c6380effde7058a386aa9e6634f88585f4a9c62d2abed9a1066

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