Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19ed49c6c42598e…

MALICIOUS

PDF

84.6 KB Created: 2021-04-24 07:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 24338131404ea26febd0e4c5ec615284 SHA-1: 10dc796965dff2822b988db9254bb4743cf81e5e SHA-256: e19ed49c6c42598e8bf892599435baf349771aeacad50d16f8400b5e304515c0
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/strik?utm_term=duralast+600+amp+jump+starter+manual PDF link annotation
    • http://medebupima.sportsontheweb.net/how_hot_do_big_chief_smokers_get.pdfIn PDF document text
    • https://vipopatovosidop.weebly.com/uploads/1/3/0/7/130775456/zusik.pdfIn PDF document text
    • https://kepefiporewe.weebly.com/uploads/1/3/4/7/134704647/3464059.pdfIn PDF document text
    • https://bimevaxufozuz.weebly.com/uploads/1/3/2/6/132683359/susazurekap.pdfIn PDF document text
    • http://pay-order.info/87324301455vgn74.pdfIn PDF document text
    • http://subonus.ru/45727682021vtmnk.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/matikobap-dafax-lerol.pdfIn PDF document text
    • https://takigufumugo.weebly.com/uploads/1/3/5/3/135345847/3557248.pdfIn PDF document text
    • http://daliadiago.com/bivifumozizawobaters3045.pdfIn PDF document text
    • http://yachtcharter.group/islamic_names_meaning_in_urdu_list_girly1znd.pdfIn PDF document text
    • http://mixed-rootwork.com/76950053804x9lox.pdfIn PDF document text
    • http://7lessons.space/sobovuzuvotutunomituo7i3y.pdfIn PDF document text
    • http://xuxijosut.sportsontheweb.net/5671129610.pdfIn PDF document text
    • http://fruct.space/etsy_seo_2020_tipso9kch.pdfIn PDF document text
    • https://gavititexufo.weebly.com/uploads/1/3/3/9/133997787/8650950.pdfIn PDF document text
    • http://lezofifividex.scienceontheweb.net/journal_prompt_for_high_school.pdfIn PDF document text
    • http://8bitbeardsco.com/66166205582skiu6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE2 5336 bytes
SHA-256: c6a0622c04a0e0d499729d61826652dbddd0189ac2cae7ddfcbfada9cc6cec9f
font_01_sfnt_off00011cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF0 11792 bytes
SHA-256: 86923888492686081fd2b16cdefda3bde06af4c5671a649ca30f58443a114768

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