Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9bb1fec3404674…

MALICIOUS

PDF

81.3 KB Created: 2021-03-22 14:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c99e20d4d40902bfae8f37102b22b15e SHA-1: 404042addb98a97548dd70afe9055de1f08c92dd SHA-256: 6f9bb1fec34046741f644c79baf564a85565216e35dda61d8a60e16d9bd79ae3
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, suggesting the PDF is a lure to redirect users to a malicious site. The PDF structure and metadata are consistent with phishing documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/award?keyword=birth+control+methods+pdf+spanish
    • https://cdn.sqhk.co/kakumipoman/jcjdhiA/zejakuwolo.pdf
    • http://rozujed.sportsontheweb.net/the_age_of_sustainable_development_summary.pdf
    • https://cdn-cms.f-static.net/uploads/4481056/normal_6056fa7b2e069.pdf
    • https://static.s123-cdn-static.com/uploads/4366029/normal_6003b8d1c4bde.pdf
    • http://ronifibofizet.medianewsonline.com/vuzopetobuvibide.pdf
    • https://cdn.sqhk.co/fumodolanes/iakmicK/71288616779.pdf
    • https://cdn.sqhk.co/jogeguzotire/hB5B9jb/xazinizi.pdf
    • https://cdn.sqhk.co/gopilufifeda/ITgcvjd/angry_birds_cast_2.pdf
    • http://tanolugulutewu.medianewsonline.com/zurenigewuvukomelobewim.pdf
    • https://cdn-cms.f-static.net/uploads/4408989/normal_605636d431973.pdf
    • https://cdn.sqhk.co/duwutawuna/Wchd6gf/calendar_template_october_2020.pdf
    • http://konolux.medianewsonline.com/warunedibajopo.pdf
    • https://cdn-cms.f-static.net/uploads/4499023/normal_6024ed1da6aaa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c894ced5-bcf6-4eef-b191-653694e8c661/39677078635.pdf
    • https://uploads.strikinglycdn.com/files/02253a23-1a52-4a81-a082-18af5c47bff7/liwimamegif.pdf
    • http://rifusurevaz.rf.gd/75049498328.pdf
    • http://xawiwevivuzox.onlinewebshop.net/39650077860.pdf
    • https://uploads.strikinglycdn.com/files/6a5352f3-0e51-440d-823f-3702209a0b49/dyson_light_ball_multi_floor_brush_not_spinning.pdf
    • http://refowokewip.rf.gd/bidmas_questions.pdf
    • http://lakugarim.rf.gd/brazilian_embroidery_stitches_tutorial.pdf
    • http://fevasakexelima.epizy.com/71090828052.pdf
    • https://uploads.strikinglycdn.com/files/adb621c3-93a5-4a15-b25c-8d7c4871655c/88616077629.pdf
    • https://uploads.strikinglycdn.com/files/e35ea025-b5af-42d7-83b9-a7a199583ef2/bupiwenolujumibogeziwekan.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_off0000fe1f.bin
dd5f546a535cfa694afa19d89ff7dc3b410568dce0c694d8c525823ce2f253d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1F 5444 bytes
font_01_sfnt_off00011079.bin
731a4486befa9a245c2e776291203e3ff3d813df9e068bd1839ac4d5a694a1b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x11079 11672 bytes