Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21e41699a087d1e…

MALICIOUS

PDF

201.5 KB Created: 2021-03-31 07:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: efe9ba69cc83e615beaa2110f4591e82 SHA-1: 1d4cdd1d5b140a5516dde495e0e353ad70fb1e12 SHA-256: c21e41699a087d1e5a28a06c16b4357e446a1f8c5055c813c27045ab3abaf1d1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host malicious content or redirect users to phishing sites. The document body, though heavily obfuscated, suggests a lure related to game commands, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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://botokaw.ru/wix?keyword=gmod+trouble+in+terrorist+town+commands PDF link annotation
    • https://xezelugewopisaw.weebly.com/uploads/1/3/5/3/135311865/bukujajox.pdfIn PDF document text
    • http://teenagetutor.online/xiximoteziruzanabenumuspjw4.pdfIn PDF document text
    • https://bamufikike.weebly.com/uploads/1/3/1/6/131606241/lovexifari.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/jumarurodonegebezir9v7m.pdfIn PDF document text
    • http://autoupgrade.website/rexenizufakololugatenivizbaio7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476123/normal_5fe394d2573fa.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/kegipusijej_revavanapofe.pdfIn PDF document text
    • http://morj.space/wazevosanamdio04.pdfIn PDF document text
    • https://xovesoxak.weebly.com/uploads/1/3/0/8/130813458/sigom.pdfIn PDF document text
    • http://onsideball.info/vekadopipeviwigogulr23w3.pdfIn PDF document text
    • https://mafoxoluz.weebly.com/uploads/1/3/1/4/131483222/8d69f96a33a036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_602669f88503f.pdfIn PDF document text
    • https://sunakolezapomuj.weebly.com/uploads/1/3/4/6/134698053/af63f14ed6.pdfIn PDF document text
    • https://vofovolovun.weebly.com/uploads/1/3/1/4/131483423/1247706.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://s3.amazonaws.com/luworizesupox/98395398770.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/99544706537.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/72384511696.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/lesurufevewigekonufope.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/sharp_tv_power_light_blinking_red.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/pijudixi.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/3182078152.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_off0002cde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDE8 5232 bytes
SHA-256: 3f65e00b7793d2daa3c09319cfb46cf11f2437b86bf1a5c449c77e60a15a0dc5
font_01_sfnt_off0002dfa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFA9 12280 bytes
SHA-256: f9300acd2acedd92fe503aa656b27cd8da9d60793d1202198251d6a9d5fa74e5
font_02_sfnt_off000308bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308BF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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