Malicious PDF — malware analysis report

Static analysis result for SHA-256 04595e4d7200748a…

MALICIOUS

PDF

71.0 KB Created: 2020-12-19 00:35:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: bb269992bee5d77c54e706cdb6b8e1e8 SHA-1: 70be84f9c1a5b0e73ca4cfa57b0aa36450dafb66 SHA-256: 04595e4d7200748a5bbac607cf3f8c4800e0561c6bce275dbea0c3e9d6b79d7d
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URLs suggest a link farm designed to direct users to potentially harmful sites. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or malware distribution attempt.

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://gettraff.ru/strik?utm_term=bell+tv+channel+guide+alberta In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416798/normal_5fd3c4d075a54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_5fb5a6bd9d8f3.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/duvipezukowa.pdfIn PDF document text
    • https://wabozejitikaz.weebly.com/uploads/1/3/4/4/134495441/wogolodifiwafomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_5fab65dd43cda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461791/normal_5faf5b7c2da1e.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/zemunomipazikez/54565911845.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/android_file_transfer_sur_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/expedition_2020_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8303c290-7d2e-4773-8937-43d0dc350bc7/animal_jam_membership_hack_no_survey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2638f2c6-f6a8-40dc-910c-3d487d702d3d/sudotepef.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/74005313256.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/bootstrap_4_cheat_sheet_grid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03291a11-a445-4b31-b1ed-e76836232068/98999475002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c16c121b-61c3-46cb-bf76-5bd3c2decb50/michel_foucault_history_of_sexuality_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/spain_buying_guide.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_off0000d9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C9 5272 bytes
SHA-256: 5421d8e4b5a7b097346446f1c9a6555fbbcf3a8a535138bef3cef411433061a4
font_01_sfnt_off0000ebb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 10288 bytes
SHA-256: bfd3828c988648413e2ea292783170009096af179ca54b8d7c2279e9769c3b13

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