Malicious PDF — malware analysis report

Static analysis result for SHA-256 030469bbe34ed23f…

MALICIOUS

PDF

69.5 KB Created: 2020-12-25 04:01:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbc9de5c5212384f19ad625c6cce05c9 SHA-1: dfd97890a8b903be0e1f440c949cac842c803500 SHA-256: 030469bbe34ed23f8d24419da40252b881d0e80adef9d62bd2c736c198334cf4
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. The primary URL, 'https://traffnew.ru/strik?utm_term=word+search+puzzles+for+adults+pdf', suggests a lure to a malicious site. While no scripts were directly extracted, the PDF structure and the presence of external links indicate a likely attempt to redirect users to malicious content, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=word+search+puzzles+for+adults+pdf
    • https://dugigoje.weebly.com/uploads/1/3/4/7/134754128/a584b390eadf.pdf
    • https://komeregin.weebly.com/uploads/1/3/4/7/134732401/0d9667e715e.pdf
    • https://zixatemanareku.weebly.com/uploads/1/3/4/4/134472678/vesarudef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9f7d9bd7-7e14-471b-ad99-6a6f7f5a8a45/17360006680.pdf
    • https://s3.amazonaws.com/wekibik/dt830b_digital_multimeter_manual.pdf
    • https://uploads.strikinglycdn.com/files/a09743d0-0d6e-47a0-823c-7f2a2b019890/long_range_22lr_shooting.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/cfa_level_1_mock_exam_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/286a5146-bf54-47d8-90a8-c49710c5658e/75975243657.pdf
    • https://uploads.strikinglycdn.com/files/e0b0ff41-9948-4c02-a852-d6f04328b6a7/dirt_devil_power_reach_model_08245_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d520.bin
91fb8357ed43aeb345347a0ad1a92e4949ead60c73d4e5b2ac647f39545bc9fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD520 5308 bytes
font_01_sfnt_off0000e742.bin
fa6f7ba84472da1343530f69f23d70b37547dbebf92d394938b5efff496d6ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE742 10080 bytes

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