Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf332eed19be8c4…

MALICIOUS

PDF

73.0 KB Created: 2021-04-03 10:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1477579bca063c6231ac4baefff9f086 SHA-1: 42bc204de79ed8693b574508d10b3a9a91f04883 SHA-256: daf332eed19be8c446db113378b0ade641df002c273d49e37ac3857d21190dd4
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of external URIs suggests a phishing or credential harvesting attempt.

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://golowaki.ru/wix?keyword=grover+beach+elementary+graffiti
    • http://tevituvodejifep.mywebcommunity.org/nazufakebowevug.pdf
    • https://cdn-cms.f-static.net/uploads/4456705/normal_605a7ee51ebbd.pdf
    • https://cdn-cms.f-static.net/uploads/4428341/normal_602560e519efa.pdf
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5ff3ca04340c0.pdf
    • http://worldworkbook.com/64923583501qoeqb.pdf
    • http://autocredit.moscow/what_exercise_can_i_do_instead_of_jumping_jacksbz6ba.pdf
    • https://cdn.sqhk.co/nemalerute/cjajcDF/60707161583.pdf
    • http://fabujisaw.mygamesonline.org/jusofusa.pdf
    • https://static.s123-cdn-static.com/uploads/4379233/normal_5ff676a8d21a7.pdf
    • https://cdn-cms.f-static.net/uploads/4467955/normal_6024ca79431ef.pdf
    • http://netewe9.xyz/boris_and_the_dark_survival_apk_androidanw95.pdf
    • https://static.s123-cdn-static.com/uploads/4379029/normal_5fe230e827037.pdf
    • http://tevutubiwij.getenjoyment.net/what_intermolecular_forces_are_present_in_each_of_the_substances_hcho.pdf
    • https://cdn.sqhk.co/zodozane/eFgggfV/talking_tom_gold_run_game_download.pdf
    • http://lerob.info/zakelozipaxeputidunogegh2l3p.pdf
    • https://static.s123-cdn-static.com/uploads/4481397/normal_5fe4b90a01725.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_c8512125677d42828e66e90eef8ed284.pdf?index=true
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_5fb272f42b79440a8ac52b6f52626394.pdf?index=true
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_e4a2d0ed70a94edfb29df11559179b7e.pdf?index=true
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_1a8b247faa924b9ebc2eb4ee014f51f4.pdf?index=true
    • https://c09438b0-f1cf-4ade-afa2-d322e048c450.filesusr.com/ugd/313cc6_27d91911876740068c6f0a53185720fe.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddac.bin
de52c948547b6dc51408ceaf0c976bc6e4782386db95b9e17906542d1f190b67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAC 5448 bytes
font_01_sfnt_off0000f02c.bin
ce848ed4594687d267658650f50a9e2edd2b7db5c873a9d1a5b59aab514015ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 11484 bytes

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