Malicious PDF — malware analysis report

Static analysis result for SHA-256 9366a92491321611…

MALICIOUS

PDF

80.0 KB Created: 2021-03-24 07:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ab813ca1f6c316f3261fa3fb0cfefc SHA-1: dc18f4ccfa2ab0961ac90aa97d2a3f313b41a8e9 SHA-256: 9366a92491321611478e5905c9a4b3907563de0335280712abcdef18fafc878b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for popular content, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/wix?keyword=harry+potter+and+the+sorcerer%2527s+stone+free+online+reddit
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5ff78220c2d20.pdf
    • https://cdn-cms.f-static.net/uploads/4459784/normal_6040b4ca45d82.pdf
    • https://cdn.sqhk.co/pibexezases/hbeUiju/9084775201.pdf
    • http://martakkord.ru/1998_honda_civic_automatic_transmission_rebuild_kitm569o.pdf
    • https://cdn.sqhk.co/xilobotinisi/jE4bIJ4/80447652606.pdf
    • http://sberhome.ru/disney_world_park_hours_august_2020h2dmj.pdf
    • https://cdn-cms.f-static.net/uploads/4450148/normal_601a9d81b2220.pdf
    • http://ganitigusawev.mygamesonline.org/xabumivogadadetuwumum.pdf
    • https://cdn-cms.f-static.net/uploads/4481065/normal_600ed5b964b04.pdf
    • https://cdn-cms.f-static.net/uploads/4385228/normal_60271c9ab57f0.pdf
    • https://cdn.sqhk.co/wadelovelo/jjyKhfd/94878690303.pdf
    • https://cdn-cms.f-static.net/uploads/4412768/normal_6048d339d4e88.pdf
    • http://antonioit.fun/suwapevogur332z.pdf
    • http://xexejevun.medianewsonline.com/82771734755.pdf
    • https://cdn-cms.f-static.net/uploads/4426675/normal_6056bf1010dfd.pdf
    • https://cdn-cms.f-static.net/uploads/4473618/normal_5fd6ae467e96b.pdf
    • http://liko-sneakers.com/aelita_queen_of_marsg3zrt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/6add642d-6924-4112-a3f2-3b5a3354569e/88783009217.pdf
    • https://uploads.strikinglycdn.com/files/e4ced0e4-492b-41cd-b512-fb09e778aeab/9875196187.pdf
    • https://uploads.strikinglycdn.com/files/9d867080-2cc7-4c6c-80b7-2021f8809fef/where_is_the_filter_on_my_samsung_top_loader_washing_machine.pdf
    • https://uploads.strikinglycdn.com/files/0fab8a24-ad5d-4e5e-aca4-cfc80b64f0a2/85121694350.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb8c.bin
f2c11d64d24c0fa65025a4159c8c77e6284bd55dd77b0b15789989856bfa7474		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8C 5128 bytes
font_01_sfnt_off0000fcfa.bin
82f401cc88ecf5a30b2d52e0e1627d81df2a6924638c768bde7d923aa2a8420c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFA 11420 bytes
font_02_sfnt_off000123b1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123B1 4324 bytes

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