Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f37bb2d66dea96b…

MALICIOUS

PDF

81.6 KB Created: 2021-03-14 10:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e85c39020372542c92b90b32d7895771 SHA-1: d33d2856be3c21cffd889b12a5fd52eb2340e161 SHA-256: 9f37bb2d66dea96b6d8166a208163df1010881d17512fe047b0491eb2907f666
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL likely leads to a phishing or malware distribution site, and the document's content is designed to trick the user into clicking it.

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://dafemum.ru/wix?keyword=7th+grade+geography
    • https://cdn.sqhk.co/dejuroli/heRXgfr/7578450565.pdf
    • https://static.s123-cdn-static.com/uploads/4413235/normal_5fe312c26997b.pdf
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5fc763e3acc05.pdf
    • http://lajokuxix.22web.org/bolamense_fc_x_bosque_formosa_ec.pdf
    • https://cdn.sqhk.co/jawuraxexije/jhihji7/83307905834.pdf
    • http://kwini-fini.online/rirofizupewgpqvs.pdf
    • https://cdn.sqhk.co/romilononove/jdge58L/11933280648.pdf
    • http://ekzo-fruit.ru/amcon_act_2019jgjag.pdf
    • http://fapevenaxopaw.22web.org/vuboxodubijumawononamupu.pdf
    • http://copyright-securityx.com/vinatexuk2xoxf.pdf
    • https://cdn-cms.f-static.net/uploads/4445129/normal_603264989881e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3e60ad50-99d4-463d-a743-a9c13ab991df/zuzapisawamufibujebaboj.pdf
    • http://sesugemedolaf.rf.gd/lofisataluwiwodewuzanubov.pdf
    • http://goduzidexemave.epizy.com/who_is_the_samaritan_woman_in_the_bible.pdf
    • https://uploads.strikinglycdn.com/files/5d24cfcb-b9b6-41b4-9ddb-3a7025200a63/landlord_final_walk_through_checklist.pdf
    • http://xopemaw.rf.gd/dixidevawerezisotofal.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcc4.bin
342da6d89cd18a240df6a1362822a1106914f5f01fd64e4cc3b2d9c61b23b3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC4 5096 bytes
font_01_sfnt_off00010e22.bin
11e5f96edc3796f25f0578b5ab133dea7affaf1e3f8cac12f0458f691a40e1de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E22 13484 bytes

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