Malicious PDF — malware analysis report

Static analysis result for SHA-256 074b354bcd51a520…

MALICIOUS

PDF

68.5 KB Created: 2020-12-04 09:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 251f888bc5f1cbd353ff572d8b36b4ff SHA-1: c34f06dae5ebd875d5b9db65d117401824d62bb6 SHA-256: 074b354bcd51a5204e750ef70425b9761fc8542305f6744a5b2cf71a6ddd2f9b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a popular book, suggesting a phishing or malware lure. Heuristic analysis and ML classification strongly indicate malicious intent, with ClamAV identifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of an attempt to redirect the user to a malicious site.

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://traffking.ru/123?utm_term=the+seeker+stephenie+meyer+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fafecec6f245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5fbed6bf3902e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5f9038c9ea30d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f875b75ac604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444114/normal_5fc13a3ee9df2.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/gupojakami/bollywood_movies_2017_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/mahalia_jackson_songs_i_found_the_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/awards_and_honours_2018-_19_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797ab506-5d52-4daa-8fdb-f28a200993b1/48959382455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7867ea67-f092-4f1f-9064-a1fbf997c365/39494376947.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/answer_20_20_carbon_bars.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/7647070542.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_off0000cddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDD 5488 bytes
SHA-256: 408ec917875ccd513839dd8e03a94fc19ad2f053379ebafe7d8c43531a1f5c8c
font_01_sfnt_off0000e073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE073 10580 bytes
SHA-256: a292183c0510c390d600176a55f04a9737c3e7d6ac7d471a3ef560d4230d0059