Malicious PDF — malware analysis report

Static analysis result for SHA-256 860c927eefc650c2…

MALICIOUS

PDF

68.0 KB Created: 2021-04-03 22:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 154a21c8c8516909d5368e3cd7ce9664 SHA-1: e7fdea97cf2ca20a323f813229eb91101375583f SHA-256: 860c927eefc650c2217147d615285f9b73ce625c230bab49ab40d07065ba8d5b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=50+round+ruger+p95+drum+magazine PDF link annotation
    • http://rowowevu.mypressonline.com/65786180969.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/49218154932.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/generator_capability_curve.pdfIn PDF document text
    • https://cdn.sqhk.co/lenubire/ciihdAO/lebara_customer_service_ksa.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/j8bRzhd/4336050738.pdfIn PDF document text
    • https://geworusidexaj.weebly.com/uploads/1/3/5/3/135306562/e2b3f.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovebakeb/UujbBGl/80883039403.pdfIn PDF document text
    • https://vumerajijo.weebly.com/uploads/1/3/2/8/132815742/tufomojofesilerimu.pdfIn PDF document text
    • https://cdn.sqhk.co/felegabiw/egjQB3n/dupebaletosiguxumu.pdfIn PDF document text
    • http://dujekuba.22web.org/21386107182.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/dlgi3ia/dinid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/589f7803-e62e-4a0a-a8cf-7471badfc893/stoeger_m3500_choke_for_buckshot.pdfIn PDF document text
    • http://sofibimibojas.myartsonline.com/what_jobs_bachelors_degree_in_psychology.pdfIn PDF document text
    • http://sokekakeloji.onlinewebshop.net/32146465163.pdfIn PDF document text
    • http://fijorolur.myartsonline.com/chemistry_book_for_college.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1318936-5670-4d2e-ab35-fc3f53ba5dff/the_bread_bakers_apprentice_focaccia_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b54b685-d2ba-402b-9306-1949a8f20697/89833680736.pdfIn PDF document text
    • http://mafofeguf.epizy.com/android_logcat_skipped_frames.pdfIn PDF document text
    • http://xuxereda.rf.gd/list_of_international_accounting_standards_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c32ca65-425b-43a6-b187-2ffb57fcb296/66403554201.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_off0000cdb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB0 5444 bytes
SHA-256: 05950908dc55f54433889a4f4fe5862996a28b7b92ac42f26db9c4a7d1cef0e7
font_01_sfnt_off0000e026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE026 10140 bytes
SHA-256: 356253e7ccd923812bbbfe1a334147f67fb1a9a72463fe60eca733735bafb9b0

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