Malicious PDF — malware analysis report

Static analysis result for SHA-256 302fef9294f9e239…

MALICIOUS

PDF

66.2 KB Created: 2020-11-13 19:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 06edb02d0ded353dd652d58542cdc7c9 SHA-1: 6b8897f7bba8c3839352392e7714862d7ee7639e SHA-256: 302fef9294f9e2399b53c11fa8bfbbe05d09841193008c79b6bc24d23e7f7bb5
156 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. 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/strik?utm_term=will+durant+on+the+meaning+of+life PDF link annotation
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/c2e143.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5f8b68fcf2556.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/083c1a10d.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/8f96abde-d40d-40d0-b8a1-a5f62f9a8dde/95741049850.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/off_fangames_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/62816997858.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/mckay_building_construction_volume_4_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0557f423-a167-46af-a0a2-015669f4fcf7/dozopubofudufegoreke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d322050-b6b1-41e7-b573-db4ebecc03ab/kabik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72069242-95ae-4c8f-a506-febaba982656/synonyms_for_notebook_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/ability_test_questions_and_answers.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC991 5156 bytes
SHA-256: c78e62c92a96a1c9179f23ef101302b8dc622c0ad1d8008bb292343d7335736e
font_01_sfnt_off0000dafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFE 9776 bytes
SHA-256: 53e4d139a6817e204e35d8bb01e4756efb682b15e5886fab44aa11328ef4ea0d