Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e17a2db7a458da6…

MALICIOUS

PDF

67.7 KB Created: 2020-11-14 06:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0471b2c22cf70a8a8953176a8c450140 SHA-1: 97505a52ab0d0f33fadf73f955aee8a09444c4f6 SHA-256: 0e17a2db7a458da6267c9ab9bbd2c90e4159c2918043aa8ccebb7e0663135f7f
186 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 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 0.9998

Heuristics 6

  • 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.
  • 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://traffking.ru/123?utm_term=zombie+unblocked+games+76 PDF link annotation
    • https://sowosevutab.weebly.com/uploads/1/3/4/3/134311467/980798.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/pigisuparobali.pdfIn PDF document text
    • https://diziwupufetut.weebly.com/uploads/1/3/4/4/134477772/nikelol.pdfIn PDF document text
    • https://pozopili.weebly.com/uploads/1/3/4/3/134310053/bivefevaxixamu_sidufezenakubus.pdfIn PDF document text
    • https://rajukoxo.weebly.com/uploads/1/3/4/5/134508115/44c4d99.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/276baf757.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/2af12377-a112-433d-af3d-7c9739f47afe/xotejevagirarolojejareb.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/b._sc_1st_year_chemistry_practical_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c52f384-744f-43b7-ac0c-b4657a11ef0c/35445658603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c12737c-0ec4-4efd-9d3c-f7cfc854ec48/37861765085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5aad39a-3f63-41eb-94cb-6aa6c824b1a5/lesson_8_homework_practice_quadratic_functions_answer_key_page_69.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/xiwusit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e1c6bd4-a2e2-43ae-b748-c16d549dff0a/sibobemefemuxevanoguxof.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/11964804001.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_off0000ccb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB5 5556 bytes
SHA-256: d1a127844e8747b1a58336d85929c461ee1771850043ac7e86320f1ce365bfca
font_01_sfnt_off0000df96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF96 10136 bytes
SHA-256: 70e78651cdc751bc498e44e70cb8804a0ea5152354147e970511004376f1147e

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