Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b375fd5dcad5d57…

MALICIOUS

PDF

68.7 KB Created: 2020-12-21 16:25:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d31d1ce3e54f3aaed7d9f6768561ec31 SHA-1: 23201063b4a4256d19ce45d1f1882f960b4b8e42 SHA-256: 7b375fd5dcad5d570b10f6383621054289f283d984f82c1834aa04eee26a35c0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffnew.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Lee beat street robert taylor', suggesting a targeted phishing attempt.

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://traffnew.ru/strik?utm_term=lee+beat+street+robert+taylor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5fe02bdf9cff7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_5fa2117c59740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_5f8a51ac548a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5fd7285f57c5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409095/normal_5f937a00e325c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fcbb9807419f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416918/normal_5fa493cb23fd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f873164043fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5fd6114dcf173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_5fa548293827f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386605/normal_5fa5c494ac526.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/2b82230b-503b-4b76-b5ce-548d0a62ea3a/ussd_code_running.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78662995-681d-4c4d-ad52-7d131ff0693c/timex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79f529f-b318-41a3-b655-341e4def6264/santa_lucia_fc_malta.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/pubg_map_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/1_clue_picture_x_crossword_answers_level_53.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dcee739-589d-4352-b714-7c158f41428b/zikitodosejubolokufesa.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_off0000d213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD213 4864 bytes
SHA-256: 85517bbc97c2a6e312bee60d87517937bdf37aff363b0a741894f01aba1a4e16
font_01_sfnt_off0000e2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B1 10240 bytes
SHA-256: 8d186dac3aa43722c4e773e24e3b807623a2d65dab58353f8d2bb0bc1ecc916b

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