Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af293b2c64a1482…

MALICIOUS

PDF

71.2 KB Created: 2020-11-13 07:37:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1e998b174926c304bc47ae882246cf3f SHA-1: 9c04c13f49b2518efb7904a419ae9e9d3b3cbdd9 SHA-256: 2af293b2c64a14823f0653d36d48a2a39b4036a02cdb13d9ef3fd631791e1cbf
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support this assessment. Although no scripts were extracted, the presence of a malicious URL and the document's structure suggest it's designed to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=bewitched+2005+subtitles In PDF document text
    • https://mevonupimiluge.weebly.com/uploads/1/3/4/5/134527198/7577391.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403283/normal_5f9667508678b.pdfIn PDF document text
    • https://dovasuseburipir.weebly.com/uploads/1/3/4/3/134394860/nosediberar.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/niporofez/vbuck_generator_free_no_verification.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/gijefanizokemeduf.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/resajalazamojep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec31517-46f3-4303-8c3d-d7058da2a282/icde_2020_dallas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b09f4748-cde5-43d4-94ac-0981090009c7/jamafemovuwazawek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c435cad-996a-4571-8a67-b416cc604db6/alla_pugacheva_dai_mne_boje.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/3156356356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b7fd5d-fb20-4b0b-9bea-43e03efa9981/niwevejejatinigubesek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e5de7b-5957-47e3-9124-4726bc5dc261/nefekilovazebene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f169266-78c8-4c99-bfb7-5209ea4a8a04/collegiate_dictionary_online.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_off0000c399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC399 5400 bytes
SHA-256: ad3b52f19efc548b0bdf259286e5347b8b1a7276de40c914e5a2ae291fe9e63e
font_01_sfnt_off0000d60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60F 10788 bytes
SHA-256: 810c62a79a4e0aec22e4b5c4d512f7502a5048357a698b760fe9ae3e0ccaa765
font_02_sfnt_off0000faf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF2 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61

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