Malicious PDF — malware analysis report

Static analysis result for SHA-256 7131615366eeca1e…

MALICIOUS

PDF

77.9 KB Created: 2021-04-29 07:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5004fc81ce193092881b20cca375f925 SHA-1: 73db0be5bf7ff6899e3669835d01c9d0815a3509 SHA-256: 7131615366eeca1e4c87ce717daf2f0fd72704b7049843415c7c2e31b4741510
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting it. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'animal crossing', suggesting a lure.

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://fokemale.ru/strik?utm_term=log+chair+animal+crossing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461523/normal_5ffe65a289e9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_6041e85643571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_6039477b41f63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fifuto/the_hobbit_2_full_movie_download_in_dual_audio_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/paferifanisetabakukatugaz.pdfIn PDF document text
    • https://e9542b43-fb79-4c62-94a9-c66526381fce.filesusr.com/ugd/4142f3_1ea1ddf1b7a644f88e847aa1559f3f9a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotodur/38286567652.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/vatifokobimowodafopew.pdfIn PDF document text
    • https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_23ba31037c864594b40bee66ed8f5331.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/pojizozizizesikip.pdfIn PDF document text
    • https://4a0f17ac-6ce6-4c05-9546-25c48d39d9f7.filesusr.com/ugd/cd79e3_ffbabc283efa413bb66458725e878968.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/ikea_catalogue_2016_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b4939b0-0a4e-481b-ba60-ebb210c8f2fd/93722045295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/393bb40d-18b0-4b36-81d2-4b56a41412da/97305882344.pdfIn PDF document text
    • https://52aa71f3-9574-4e96-898b-bb16aa893b2c.filesusr.com/ugd/b13a71_8f1061849a6a49a7821738b8698e00bf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec3f41fb-f442-4551-ac52-06a7180eea9f/is_26_old_reddit.pdfIn PDF document text
    • https://e432c3f7-acc0-403b-bc7f-1b8c16782643.filesusr.com/ugd/6a4899_1f22733546b94ce3883c7da68569e0e1.pdf?index=trueIn PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_d44d2e64dec647cbaac05116fb101ae4.pdf?index=trueIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_c8b4c9ca4f11419abfd2fc518b76bea3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/winumigutam/philips_sensotouch_3d_shaver_heads.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CB 5156 bytes
SHA-256: f7dc1e6a276a4d2df18998080d131dd729c8533f434927511820bafb8032b5e6
font_01_sfnt_off00010633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10633 10624 bytes
SHA-256: 976760e277fbf454576f458b0f39d4dd1fc594da60837a54ddeaa8732de93a88

Open this report in the interactive analyzer, or submit your own file for analysis.