Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fba56b36611d06…

MALICIOUS

PDF

83.6 KB Created: 2021-06-05 18:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 35b217c1d66b16b12f37462db710610c SHA-1: 303575607af26b8dc18872bbab2e71ae2b7410b6 SHA-256: c2fba56b36611d066b02af7611c2717e4a2d9f9d237409f896039ba2095f1290
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a website offering game modifications, suggesting a lure to download potentially unwanted or malicious software. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', indicating it was likely generated by a tool rather than a standard document editor.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://pistant.ru/pbw?utm_term=dawn+of+titans+mod+apk+2021 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500200/normal_5ff6229f15bd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425005/normal_5fe2aa29eb67d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391024/normal_5fcc07ea23acc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422884/normal_603514d3ddf1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_6056e32260149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_5fe9ba6659547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_602d318321219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411270/normal_606394ac5991f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_602fe68893510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_60b9261b89bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382960/normal_5fe93ff20f512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5feafaf756db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493209/normal_605b917b1b7da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497697/normal_6022c436e12de.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4370265/normal_60b43cf8c7e80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385887/normal_5ffaaf3b869bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407804/normal_5fedc6dfe10b9.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
    • https://uploads.strikinglycdn.com/files/4849eb1d-19a3-4228-bd46-8c953047dcaa/27675818854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a592265b-d82c-41b2-8201-16a01e6c2c77/votenuwovutazosadomavefa.pdfIn PDF document text
    • http://ruwomodanom.pbworks.com/w/file/fetch/144474966/wibufikasajesevib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c920071-03be-4188-8a68-481571adc52c/65773524973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da50dc6-9378-4448-aa62-364a38337d28/sapelujulujapol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d0791f2-225c-4c9a-a40e-f5bd8f54699a/zepegonuxokibewenuxawodud.pdfIn PDF document text
    • http://xojifot.pbworks.com/w/file/fetch/144423648/61272907969.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBA 5212 bytes
SHA-256: b5cff562ebb97ba47aa0d3c021750745578ba68a9c226fc8f7b8b0677a247ef4
font_01_sfnt_off00010071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10071 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00010901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10901 12668 bytes
SHA-256: 7624b9c897b46bd907bac5e4d579481f30b528d2b8cb5608636040e8b3d332ba
font_03_sfnt_off00013082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13082 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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