Malicious PDF — malware analysis report

Static analysis result for SHA-256 360e158fb92d4dbf…

MALICIOUS

PDF

69.3 KB Created: 2020-11-14 04:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 22ebb4ce5544532c97cb0fd8655100be SHA-1: ef917f92f933f4633f808553c6fa14f677756589 SHA-256: 360e158fb92d4dbf8f115995760c14637e0aed5a00d44f2330a1701eb06cb60e
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though partially corrupted, contains text related to 'rat removal cost' and an embedded URI pointing to a suspicious domain. This suggests a phishing attempt to direct users to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafffi.ru/123?utm_term=how+much+does+rat+removal+cost PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403271/normal_5fa024011dd9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421036/normal_5f97373c3a03d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455884/normal_5fa24e0fa8be7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f91f168bfdcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_5fa652d4c13a9.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/d1e781d3-eb03-47eb-9eb7-90dd3a79572e/gekinenukamajaweketa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dc34103-8384-417e-bc73-9d01e3a0affa/cover_letter_template_overleaf.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/fusag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a273cf5-8aa1-4382-bb6a-007be41d8aae/95185346197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e96d2d0d-c8cd-4b25-b51b-5fcdd4d41115/yahoo_answers_baby_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22e8c05d-6994-4576-9623-cd63c9b511b0/dogatokimafakifeziwimefo.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_off0000d349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD349 5292 bytes
SHA-256: 0a7ca171d8795905fdb41555c44e7684f6572e302ab2aea5b1863b9beb772313
font_01_sfnt_off0000e52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52D 10488 bytes
SHA-256: 7000a865dee4475fb7ac5a89cc34550614dd8b139364a4c9b369db68ccc06467