Malicious PDF — malware analysis report

Static analysis result for SHA-256 660d200e5e8c0d31…

MALICIOUS

PDF

70.9 KB Created: 2020-11-25 20:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0f4d27078bffb449f19cd3aa45b83ab9 SHA-1: 7bc01cbfdc18836d76a17535501f0cb6604519d6 SHA-256: 660d200e5e8c0d31559c4a7d7117793190fb60ffd41eb9bed8f169c1e56e1989
214 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The primary malicious URL is 'https://traffking.ru/strik?utm_term=babycakes+donut+maker+mini', which is likely part of a phishing or scam campaign. The document's structure and the presence of numerous external links suggest an attempt to manipulate search engine rankings or distribute malware through a network of linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/strik?utm_term=babycakes+donut+maker+mini In PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_5fa4a031f3748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8b2b7b164ff.pdfIn PDF document text
    • https://fudukonuxevefez.weebly.com/uploads/1/3/4/6/134606022/5fb8d0ed98fa919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5fab682b36d79.pdfIn PDF document text
    • https://niruzezigup.weebly.com/uploads/1/3/4/8/134889773/e5d38b049.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451049/normal_5fadfb15ad668.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/vekodupiwarobi/ragikudes.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/xotuwibubuvus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6499148e-b068-4014-ba21-e3cd8035d7ad/32581452215.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/focus_on_nursing_pharmacology_8th.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/real_estate_broker_commission_agreement_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b90b898-eeb1-45f9-9c08-73aa9c8814e9/fowles_analytical_mechanics_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/block_ads_android_tv_box.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/math-_drills._com_distributive_property_a_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cfaf5f3-55e4-4c01-8a68-10b30858c72e/tilizezevufinunogatem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf277dd-b916-4c4d-bb7e-25a75ba3351a/13108715068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40884a56-9742-4007-b0ad-04192d518bb3/mech_arena_robot_showdown_game.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DB 5408 bytes
SHA-256: ae4b9623a54b84c6bf9058bfa87924ae1178b7d977071374dfa35e67bad4c6a0
font_01_sfnt_off0000d531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD531 10668 bytes
SHA-256: b5d8b35590d83c92ad63bab5d1d06e6ddcf11d3f3401376aca091911cc069ba2
font_02_sfnt_off0000f97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97C 16160 bytes
SHA-256: 25a5e6c7c9cd73e1730f271d334b71b3c0ac6385951e3737251623a68d8eef5c

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