Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcea2b9d96765521…

MALICIOUS

PDF

67.9 KB Created: 2020-12-23 05:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d3f4fb03864fd0ad7aadae946d73577b SHA-1: 872faf6a98a037d6eeb0f385a4a4dbe9077c84a9 SHA-256: dcea2b9d96765521c1cd3211a47de534d00dd1fe4805ff05e18371af98c0d68a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, a technique often used in link farms to obscure malicious destinations. The primary URL, 'https://traffnew.ru/strik?utm_term=photo+tool+for+green+card+lottery', suggests a phishing lure related to the green card lottery. The presence of a PDF_SEO_LINK_FARM heuristic firing and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or malicious redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=photo+tool+for+green+card+lottery PDF link annotation
    • https://dixufewopirar.weebly.com/uploads/1/3/0/7/130775961/vilakoxavun.pdfIn PDF document text
    • https://bolomomotune.weebly.com/uploads/1/3/4/7/134762543/ae5ab338e.pdfIn PDF document text
    • https://mexavabawidusa.weebly.com/uploads/1/3/4/3/134375000/7015079.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/vukusa/90303182814.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/leiningen_versus_the_ants_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/ferrero_group_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/mixupuvexutobavodigira.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/cara_call_of_duty_mobile_indonesia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7f42e13-bd72-4d79-a198-fe162a6cc2fb/31895917053.pdfIn PDF document text
    • https://s3.amazonaws.com/kizuporowefib/lewitogetus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c39c7e-2842-4ac1-88f0-7ea5625eba85/guwalunoj.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/reference_letter_from_employer_to_landlord_template.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/energy_conversion_organelles.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_off0000cd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD77 5208 bytes
SHA-256: 234847c828bdfc1fd998e4b545ce07c08625c60833227622e1911afb40b17a9d
font_01_sfnt_off0000df33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF33 10412 bytes
SHA-256: 6d378c7da3f313f4b75cac3f09ef9618e45c9ed64097402e9bb8bd00c57e72ce

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