Malicious PDF — malware analysis report

Static analysis result for SHA-256 232a3159f6d128d0…

MALICIOUS

PDF

68.7 KB Created: 2020-12-23 17:10:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b4464395be0eed0ace45773ead5d771 SHA-1: ecd874e4158b849cea40cb26324fc251697a409a SHA-256: 232a3159f6d128d060032adc6cf90f86079013091e3412d24e7da1b87e8ac5d8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a link to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The embedded URL, 'https://traffmen.ru/123?utm_term=marvel+heroic+roleplaying+annihilation+pdf', is the primary indicator of compromise. The ML classifier and ClamAV detection further support the malicious nature of this file, classifying it as a phishing trojan.

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
  • 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.
  • 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://traffmen.ru/123?utm_term=marvel+heroic+roleplaying+annihilation+pdf In PDF document text
    • https://cdn.sqhk.co/weteroliwo/e9fiiji/sasopipifalajebebon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5c632d1-7ca7-4873-94f8-a6b15539aaea/jacob_s_ladder_piercings_male.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84eb4d1-84d2-4d96-902e-93a31a71a1b3/69440824978.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/aicpa_ethics_exam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9dbead0-cf56-4128-8f0d-7f4f66131729/le_guide_des_backpackers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e379ea-2c81-4c14-aaca-bb5b36545e1c/vector_marketing_corporation_pay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a166ccc4-d656-4439-9ed9-32a9c3bec349/i_go_to_seek_a_great_perhaps_looking_for_alaska.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71636f50-e0c8-40d6-959b-b2fb651c7d32/oscilloscope_for_sale_used.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad4b5db-c4f4-4b94-aec1-87e193e27c7e/93176393355.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/30182330726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a66eccbd-a4e7-4b61-b4b1-2bc69d7a7158/pronoun_and_antecedent_worksheets_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f311eb9-c9d5-4db5-8c1b-9b45eb9a05a1/zerosojejasejomudoxasu.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_off0000d073.bin
1a7945a6153bad1518d089ca1974f058063dbdf9b34a1642553557f370c3d966		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD073 5404 bytes
font_01_sfnt_off0000e2ef.bin
d5d056706dbe976bb3fb2a8204ea0d7e9db52a334b871351417b1f069e8c5d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 10132 bytes

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