Malicious PDF — malware analysis report

Static analysis result for SHA-256 47aefac713e9ea86…

MALICIOUS

PDF

77.4 KB Created: 2020-12-25 14:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 035fcd6f6564cf6e2880026410fb0631 SHA-1: b114224ee667797ee76a4e99170d83d9e592d61b SHA-256: 47aefac713e9ea869874ee81ebcc82165adf944d5647936fad112550c3c66e98
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. An external URI heuristic points to a URL that appears to be a lure for downloading a wallpaper, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URL are strong indicators of malicious intent.

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
  • 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://trafffe.ru/strik?utm_term=new+york+brooklyn+bridge+hd+wallpaper PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414500/normal_5fbf6215ec63b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450345/normal_5fd9e3cd6d110.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebosatu/FifjjZ2/kedirudifumubinubisaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484143/normal_5fb5433a20b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415748/normal_5f9cb2b6723a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_5fbae76473305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420604/normal_5f981216e8d59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_5fab5e383d36f.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/hxKBDhg/boss_chromatic_tuner_tu-_2_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f8e014bb8851.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2b302049-7201-4278-b64c-947c6d1861a0/xilelomutefesitis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc99dae-d8b8-48e8-805e-f8d5386e85ae/fubasisulagerujoruse.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/labimudesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad531f0d-fc36-4011-bfa3-0dbd8dc936e7/the_shape_of_things_neil_labute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc768b0a-47ee-4e1b-893d-9ef8b98ce1d8/kobe_at_lakers_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25738dc4-caf4-4e4c-a83e-4c123846343b/watch_nfl_games_fox_sports_go.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DD 5120 bytes
SHA-256: 50ddb2732e6143c1b5401cb6b17676cf3b5949ea48370fb9740012860ff06a67
font_01_sfnt_off0000f746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF746 10184 bytes
SHA-256: 3beee0199a5acf54dd6550464f9bc9ed591693592a34802c4c950f8e55641321
font_02_sfnt_off00011a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A32 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e