Malicious PDF — malware analysis report

Static analysis result for SHA-256 7001c6d0402c91ba…

MALICIOUS

PDF

74.8 KB Created: 2021-03-28 13:35:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d71855f1e437b498a274a7ad5ce4ac37 SHA-1: 9c5d2545445875aecf1ee8ffd18751973024eda9 SHA-256: 7001c6d0402c91ba4cba2e1d621634cb92ccf9c0c2b26262387019cdfc596952
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 0.9997

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://soxebez.ru/123?utm_term=bhaubeej+marathi+movie+song+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448986/normal_600a3e1245c15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_60496a6e64c1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530578/normal_603a606569414.pdfIn PDF document text
    • http://liketsven.xyz/what_is_the_exposition_of_a_plot4qca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448548/normal_5ffc851115a71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_6003be7d45294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_603bda70d394a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_5fee8686ab60a.pdfIn PDF document text
    • http://premium-cinema.com/326461833490dnnb.pdfIn PDF document text
    • http://elinekici.online/which_taco_bell_serves_breakfastbuz9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_604680fdef4e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529697/normal_6044de1e131ab.pdfIn PDF document text
    • http://teagreen.space/lisatavg2gfh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_602d057a0b0b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sejakopa/communication_studies_ia_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/bully_lite_apk_data_high_compress.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b67f8b6-8b34-480a-aeb9-792037bc0449/65570864246.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/glencoe_math_algebra_2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9cf2554-4be7-421d-9d4c-d81d75d91a44/periodic_table_blank_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/90156588432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d227d818-71b2-4baa-bf4f-1a04c8e48b5b/unabomber_manifesto_newspaper_for_sale.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 4

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_off0000e62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62F 5476 bytes
SHA-256: a435fc520321e01faeb2030a51e331fb36b8fd7e536e8725058ee51a6a5f3604
font_01_sfnt_off0000f8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B5 11048 bytes
SHA-256: 7a6c3187fb52b33fc8d72d64abe41dde6bb42aac9580574e3202475cdcc4a988

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