Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6010437433ff7fd…

MALICIOUS

PDF

99.0 KB Created: 2020-11-25 08:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9b7d9ecaf0e1cbc7c4bdd68d92c75d7f SHA-1: 7c8e4d99f880b140c1958bf3040bb1a1bcd858cd SHA-256: c6010437433ff7fdd99c3bfe15a6a34a8039d66b79edde500e81e5aa6b077073
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a PDF link farm. It contains numerous external URIs, with one notable example being 'https://trafftec.ru/123?utm_term=progressed+moon+in+cancer+8th+house'. The PDF_SEO_LINK_FARM heuristic suggests a large number of external links, indicating a potential for SEO manipulation or hosting of further malicious content. No scripts were extracted, but the presence of external links and the overall detection suggest a phishing or malicious redirection attempt.

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://trafftec.ru/123?utm_term=progressed+moon+in+cancer+8th+house PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5fb322a51e233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464301/normal_5fb444d37cd9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_5f8f5972707c3.pdfIn PDF document text
    • https://wotapidedodibi.weebly.com/uploads/1/3/4/4/134475573/b7d6a452e083b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f8e434cb2a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_5fbbc2013d8ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f8c57c920ca1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f877317c6622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/widiku/84733570373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b32f847-f7a1-435d-a958-ba24df1606a9/05_mustang_gt_engine.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/vijibomasutefetazug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c30a0c34-9cc3-4ee1-8c8a-13f5c15169d4/43130813587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c62a6da-2822-4b29-a60e-e9c470c18081/83945699072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c92cdf1-4eeb-4790-8026-28485654f92e/6980958847.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C27 5400 bytes
SHA-256: 9a1f92e36b232756efbe6bcad63c46c6d90165211cdc75ac507318f61f8461c7
font_01_sfnt_off00014e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E44 10060 bytes
SHA-256: ca809ef762cc2f77d2c7b95c2c248fd6b00b6fd79e729fc672387d22ed6519b3
font_02_sfnt_off000170b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170B0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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