Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecec12e9e72d6dc6…

MALICIOUS

PDF

68.1 KB Created: 2020-11-19 00:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0a0af71ed902f54dc228832f76ade497 SHA-1: 107b330712a043ca3aeeecbd291000f4a70a51ce SHA-256: ecec12e9e72d6dc6a5425cd869cf55a47ec830e7f3cf4fd204b98c0ee1958d3c
156 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/strik?utm_term=the+clique+books+read+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f9240b26e11a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5f9e665a5c83d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449605/normal_5fa3e532587da.pdfIn PDF document text
    • https://neluposu.weebly.com/uploads/1/3/4/3/134369170/gelureken.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f8e7fb324368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_5f91fb3724012.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/multiplying_integers_worksheet_grade_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1db3616f-c9ad-451a-9770-901dac3e0b64/51387410443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a9ec67-2e63-4974-bfa8-7f50b399dc15/fikabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3f07d9-8114-41e0-a5b5-55bf9e92cc5f/27179228493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d1ce90c-38e9-4819-84df-8ed746f8390f/93818666079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61f2574-06b5-4345-a830-0176a70207cc/46243180275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0571f469-684e-483b-b6b2-f39fa159729a/xafixepozurinal.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_off0000ce03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE03 5308 bytes
SHA-256: 8cd9331443142e53cf038b95969ef38990b41b5038181f9729cd8fb3cf4fb1d8
font_01_sfnt_off0000dffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFD 10324 bytes
SHA-256: c3e5fa5063249dcf96f452a9c215162d2f486207d6de2566cf82e5192acd23be

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