Malicious PDF — malware analysis report

Static analysis result for SHA-256 353f57325a2ec875…

MALICIOUS

PDF

65.8 KB Created: 2020-11-19 16:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7e0365cab72b431e225894156c6dcd12 SHA-1: e76adebd5cb46458feceb4a0d5c2a999906262da SHA-256: 353f57325a2ec8758cb93ca21e22b53d8387e7d4a4e61eb326b4a3c5caebd9c1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body and embedded URI suggest a phishing or social engineering lure, likely attempting to direct the user to the malicious domain trafftec.ru. While no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/aws?utm_term=free+gospel+accompaniment+tracks PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384152/normal_5f923c200e791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_5fa4d76364518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407729/normal_5f96f4bbd12e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373016/normal_5f8d92fd8b42e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_5faee7bd435f7.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://uploads.strikinglycdn.com/files/3863bead-56b5-4038-8962-20fda1922ce1/pazopewe.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/cesare_pavese_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/gosselins_without_pity_blogspot.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/centrales_de_riesgo_en_el_peru.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/kurtz_ersa_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b549548-9d4b-4885-b2c2-ea23796e7d95/84520038244.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/bhaigiri_2_south_indian_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df28052c-c4de-4178-9519-60b54e5a00bb/mepetume.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_off0000b49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB49B 5060 bytes
SHA-256: f7b6a9143dcdc2389ffa179295255e1d3f65ec3b5e099666c68f323d77b42664
font_01_sfnt_off0000c5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B6 11404 bytes
SHA-256: 4944e9a011c8cfe43824545e74e72bda19216dc502151fd94fc933c60795b4a9
font_02_sfnt_off0000eaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA6 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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