Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac91f28c4a78cf4…

MALICIOUS

PDF

186.7 KB Created: 2021-02-04 08:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 676ab7018db0bc7b2b61ea1016f0c06b SHA-1: d13cbd9c43fe1a9c0118a500739774f1220b9ef3 SHA-256: 9ac91f28c4a78cf461b7559bb16972cd219447fa1d31ef7bf0563f54f821f296
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains multiple embedded URLs, with one prominent URL pointing to a resource that appears to be a lure. The document body, though heavily obfuscated, suggests a deceptive title, reinforcing the phishing or malware distribution intent. The presence of embedded URLs indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://druttle.ru/123?utm_term=pokemon+shuffle+haxorus+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366978/normal_600e885701b98.pdfIn PDF document text
    • http://vezerfa.xyz/18772658414oqerm.pdfIn PDF document text
    • http://pressit.fun/atm_uml_diagrams0jeut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450635/normal_5feb321232ec9.pdfIn PDF document text
    • http://ketousa.site/427985872119xdm1.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/rowimovotaduzozadiva.pdfIn PDF document text
    • https://jupufafel.weebly.com/uploads/1/3/2/7/132740723/bazebilulesigasusafu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480142/normal_6000779100fa0.pdfIn PDF document text
    • https://keminozabigorez.weebly.com/uploads/1/3/4/8/134886120/loxusope.pdfIn PDF document text
    • https://vojimefijizudi.weebly.com/uploads/1/3/4/3/134310580/tejefuruguvareda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380700/normal_5fcfefebf1b36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490141/normal_5fe0875dbd0a6.pdfIn PDF document text
    • http://shlifovka-pol.website/suppresswarnings_unused__androidg9onv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458417/normal_6006d5132514d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369158/normal_5fce4fd01f639.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/fiatlhj/sesisaxofawumujotaje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501360/normal_601501afa38d5.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://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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002591b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2591B 18940 bytes
SHA-256: 35c8923927f467ceb3b1fbd2e1cf9118995142135521cceb700525d4ba78b121
font_01_sfnt_off000293ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x293EA 5256 bytes
SHA-256: 0c6d128b9faee2d68e3751411ba526d3e9323176c3912eea4db23983c2114176
font_02_sfnt_off0002a59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A59A 12052 bytes
SHA-256: dc6d1521c73d4bfcd9b13850021214ae15bfc5c4fdb829de4822222bd900e9c1
font_03_sfnt_off0002ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE84 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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