Malicious PDF — malware analysis report

Static analysis result for SHA-256 98169280d04169a8…

MALICIOUS

PDF

61.4 KB Created: 2020-12-18 12:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 03cc0970865b70feb27fd76f10bf3ab2 SHA-1: 526609d94510dfde220d8684ab88c052eff659be SHA-256: 98169280d04169a816a458df0ad5a0900d479ef5983186a9c72aea7b3a324b7b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as a Breitling manual. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic firings suggest a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=breitling+professional+aerospace+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f9d66a5d4d59.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/8307624d-42bf-46e0-936d-339c0b699f9f/official_act_prep_guide_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea6ac6229360ecad0c46/t/5fc4fadb3c02f22b9da8e97f/1606744796521/the_ghost_brigades_audiobook_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc527cf084698658e79f80f/t/5fcb55fb36758319a5512a5d/1607161340100/kaxipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cab31c-ee02-4657-b430-8604e3d42ae1/genetics_word_search_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b170b111-1cb7-412a-ad5e-d75ccedf3649/47948988788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f00316a-3bdc-4cea-b2bf-cc8b49ac6bd4/fire_kristin_cashore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b8bafa-c9da-4c95-a463-61bd8133b3a4/rarexofuguguzebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e728926c-d7cd-42bb-bea3-c7133bd9a5a1/list_of_free_movies_download_sites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed390f2f-6900-4867-855a-555fdf555005/larakuv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14bb05687f52b6b83d941/t/5fc766b48f079636157a40ef/1606903477011/vitikosarelur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa01b0d1-5180-4bbb-a79a-66cba0bed5a8/vadebudumebavasusititu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce935f4ad16805cda6103c/t/5fd6974f034a586a4f4c5998/1607898959540/the_huntsman_winter_s_war_trailer.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_off0000b4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F9 5384 bytes
SHA-256: dc04228aafcf61530af478ef255b0dc8a4412be17e5ed89bd158c6ccde196685
font_01_sfnt_off0000c73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73A 9884 bytes
SHA-256: ae1d1155ee32386b35b9bb6f1ab1c2d6a891a5dfa751a53f6b437e3c7521a8a3

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