Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d31210635ac42a…

MALICIOUS

PDF

79.5 KB Created: 2021-06-12 03:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2982120ee4de031e48281361058b1db4 SHA-1: 9e69ebde2fed9d11982b0dc5eb64519eed2ca44f SHA-256: 56d31210635ac42aadd9251fe02556b7d3f3ac249a134970393345e35012bf75
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/123?utm_term=jupyter+notebook+report+example PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379241/normal_60134f4a44fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5fdb69f199dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456666/normal_60baedd20bff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455387/normal_5fd8f62e3abcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484818/normal_6019f3478051c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417207/normal_6063059d600c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_605f3d28906e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450345/normal_5fe8ebba0a468.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_5fe0efcb2e9d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_60c172fe377df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380890/normal_6032123a3eedb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413125/normal_5fe6fcd567eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456134/normal_602d394080973.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/cf71e97d-3fdb-4624-a884-e8161f1d3756/javascript_get_absolute_left_position.pdfIn PDF document text
    • http://pukagij.pbworks.com/w/file/fetch/144560601/13620870913.pdfIn PDF document text
    • http://zuvuzut.pbworks.com/w/file/fetch/144622269/watch_dogs_chess_endgame_puzzles_the_loop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ca1350-6166-4ea8-beac-d0d97b0852b4/46557837954.pdfIn PDF document text
    • http://patuwit.pbworks.com/w/file/fetch/145009305/all_codes_for_be_crushed_by_a_speeding_wall_2020.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_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 5148 bytes
SHA-256: f11f5114cf0c73fe55cb09df83a78586244fa7a714e4b243afaf05dda95d9dcb
font_01_sfnt_off000109bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BF 11336 bytes
SHA-256: 939a5824c99be535d7e6c146c487ebec448c73fb8019b859b950e107579b9b80

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