Malicious PDF — malware analysis report

Static analysis result for SHA-256 9086951752c35dd7…

MALICIOUS

PDF

78.4 KB Created: 2021-04-02 00:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 338cd1eb5e920321d42eb11ec986cd7c SHA-1: 0e8720e890bba60b04ea719fc229c808f32ba1e4 SHA-256: 9086951752c35dd78c09bd629caae211ed71ada7484e46bb2dfcbe0f0c386e1b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, appears to be related to lease agreements, suggesting a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/strik?utm_term=how+do+you+write+a+simple+lease+agreement PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5ffeb3ea7a652.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_603ef99221c31.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/hihaejh/zigzagoon_galarian_evolve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_6014baf94b226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460972/normal_5feb78f0a83b2.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/5nmgiaW/golden_boot_trophy_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418985/normal_5fe98a16c15df.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/jamjbLX/hokey_pokey_meaning_in_tamil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_604d4aa62204b.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://s3.amazonaws.com/pusolefosex/elektrik_arpmas_pediatri.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/54098788443.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/usf_campus_map.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/journey_of_man_a_genetic_odyssey_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/la_campanella_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/nutritional_biochemistry_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/93632540178.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/87453998295.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/chicken_biryani_video_in_tamil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/23700502493.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/what_is_the_theme_of_the_book_percy_jackson_sea_of_monsters.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_off0000e827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE827 5316 bytes
SHA-256: 3f9df388797f48afd774f2dc0d5d06cf36eae8775c24e6dd0cd0e9460d66b657
font_01_sfnt_off0000fa36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA36 10324 bytes
SHA-256: dbce5be7478243681bdff481630b98e2609ad65d0ae0bd84a2d4af14ff030575
font_02_sfnt_off00011d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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