Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0583730c136819a…

MALICIOUS

PDF

76.4 KB Created: 2021-04-03 19:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: bfad8bec2a59916268e4d3b03a4884a0 SHA-1: da72c6b35e3b97a1bb6c5d41b56674d3702e76ad SHA-256: d0583730c136819a276d978c7d2d61a029cc5d0774406669acec3676b4f05f21
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://seumenha.ru/strik?utm_term=what+are+the+different+types+of+html+tags PDF link annotation
    • http://garirixis.22web.org/butterfly_wallpaper_cave.pdfIn PDF document text
    • http://sopidemeleket.mygamesonline.org/how_to_use_a_cricut_expression_with_a_computer.pdfIn PDF document text
    • http://xivobivivupe.mygamesonline.org/12442203427.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/bike_repair_manual_download.pdfIn PDF document text
    • http://xirapanagix.getenjoyment.net/pokizuboxiwagugo.pdfIn PDF document text
    • https://fazipebafutemi.weebly.com/uploads/1/3/1/8/131857540/3e3801.pdfIn PDF document text
    • https://pufinixebajev.weebly.com/uploads/1/3/0/8/130873949/d49d4350ed48b.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/11281003a53f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479237/normal_601a9c6d96a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_602f61732d8d3.pdfIn PDF document text
    • https://gegirugotosizuk.weebly.com/uploads/1/3/5/3/135397722/4341663.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/29352977813.pdfIn PDF document text
    • http://rojaxol.iblogger.org/31725710093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_6041ecc3e680f.pdfIn PDF document text
    • https://beperupofifu.weebly.com/uploads/1/3/1/6/131636755/vogejujiro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zupupizejegujun.epizy.com/49246670825.pdfIn PDF document text
    • http://fedisumudajitu.rf.gd/79475532645.pdfIn PDF document text
    • http://vivemowirarok.rf.gd/64814259932.pdfIn PDF document text
    • http://mapesag.epizy.com/sebomuku.pdfIn PDF document text
    • http://demunoj.epizy.com/lease_agreement_example_template.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_off0000eaff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFF 5568 bytes
SHA-256: 3b2b1f55280b2bdf7a97e9020e2a6cd1a19f43310493dfc7f2777b6b8297264b
font_01_sfnt_off0000fde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE0 11636 bytes
SHA-256: 6664a36fa7e26138d70b9c64a3714236289789cd28ebf5ce4162ab5d4433a215

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