Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce881177f383c470…

MALICIOUS

PDF

79.0 KB Created: 2021-02-19 20:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 3ac9ded47a94911046900aa46321947b SHA-1: f2d63a420f272b3d5af7685a6bb07793a3a6583b SHA-256: ce881177f383c47000c0eac05d5bf87fc5923095151114d13f7ea53974d74a0e
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Nike corporate communications strategy'. No scripts were extracted, but the presence of embedded URLs and the ML detection strongly suggest malicious intent.

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://seumenha.ru/wix?keyword=nike+corporate+communications+strategy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446270/normal_5fd683bc4d96d.pdfIn PDF document text
    • http://info-pages.ru/30766325663ml1qq.pdfIn PDF document text
    • http://asta-stroy.ru/gerald_corey_counseling_and_psychotherapyd732l.pdfIn PDF document text
    • http://wofeboz.66ghz.com/32267765409.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404738/normal_5fcc8c062879e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469143/normal_5fe04fb27e6db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420610/normal_5fcc2f4d1f0ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_6012455e92c5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486368/normal_5fd98c4d22c23.pdfIn PDF document text
    • http://kulinar2020.site/delicious_world_cooking_restaurant_gamep0p9a.pdfIn PDF document text
    • http://clebohets.xyz/230215598225kfpk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422658/normal_5ff7d51f6813c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_6018e606b369c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426088/normal_5fefb354e65ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412388/normal_5ffb4b858273c.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
    • http://wikimenuvebiz.epizy.com/restaurant_business_plan_south_africa.pdfIn PDF document text
    • http://sovavovekemaz.epizy.com/pc_game_god_of_war_4.pdfIn PDF document text
    • http://legibevisavu.epizy.com/1851726673.pdfIn PDF document text
    • http://lixejezi.epizy.com/amman_bakthi_padal_masstamilan.pdfIn PDF document text
    • http://fasodirovafe.epizy.com/murewazetobarikini.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_off0000ead9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 5240 bytes
SHA-256: 46cabdbb0e1ffa199f1ad7554fe91e7384821eb781efd0af1ba87edc394a7c8a
font_01_sfnt_off0000fc8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8E 10736 bytes
SHA-256: 637a029ff17e66b173cba0e2d8b65b82858ea64fd17e0472a2e85f78457f8cf0
font_02_sfnt_off0001200e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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