Malicious PDF — malware analysis report

Static analysis result for SHA-256 8266a15c08bcb119…

MALICIOUS

PDF

82.4 KB Created: 2020-11-14 18:19:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 095606eb8ba4b491e1a8b9d334fb867d SHA-1: 2e6196204f28e9f6ab1a8e8aff4ca118c4d83ea9 SHA-256: 8266a15c08bcb11941ffec54665569ba7419ae3ab8b74679c8789355482160bb
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=easy+clue+setup+osrs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403259/normal_5fa464a617aec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_5f9ea10caa97f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5fae308230316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_5f90e4026f873.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/e11cfcf5-5fda-4fdd-aa25-9378ca57f70a/xulaxosakuzunojifukusilip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/636b868a-db51-4615-93d9-e6875febd837/duxabil.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/accidentally_deleted_hotmail_emails.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5a8247-bc66-43a9-9414-932dece92939/raneze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb76521-328d-4cc7-9c6d-f6dcdbd345cc/dead_poets_society_full_movie_free_d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cece0c79-3428-4f83-87c3-b979e380ff56/81444598569.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B2 4984 bytes
SHA-256: 503843cac87b789ceca32772b8c16d231f528ffb7f91d17f004f3d75933c21b6
font_01_sfnt_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 10832 bytes
SHA-256: 32b02f5410d1f11095620a195e58fb3024e83c521159ce8c7ba31663310c0b2a
font_02_sfnt_off000127c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C5 16140 bytes
SHA-256: 5bfda07072dd2e1b0df7f1680a75ba616774ec51e1a09c257f000ba239241e1c

Open this report in the interactive analyzer, or submit your own file for analysis.