Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e29ae0559839678…

MALICIOUS

PDF

71.7 KB Created: 2020-12-31 07:37:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f6739d13e81f07c7d7bf9016a33ac0f0 SHA-1: ed11af016dd4a068991c3ec61327f2027d5b2652 SHA-256: 5e29ae05598396789fa88ce7107fae6a115ea5cc5017e7c681c293ad4da0d57b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, appears to reference a 'cricket game' to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/strik?utm_term=all+stars+cricket+game+2020 PDF link annotation
    • https://lutesikesopisej.weebly.com/uploads/1/3/4/8/134884151/8629825.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/qaVihhj/flourless_chocolate_cake_cooking_time.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_5fd738d243aa6.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/4YEgfjh/business_plan_sample_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f8a85a8c8b45.pdfIn PDF document text
    • https://sijoxedewi.weebly.com/uploads/1/3/4/3/134346210/mujar.pdfIn PDF document text
    • https://nipoxumafoji.weebly.com/uploads/1/3/4/7/134717148/b4e9363d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369498/normal_5f91c4d517217.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/daselex/english_tagalog_dictionary_offline_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528d41d9-4023-48e3-8b08-2794edc98540/51876586162.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_off0000dcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC0 5448 bytes
SHA-256: 5fefb156a9de916d101c16925afb300f9c4c31cdd6f4301cd9cbf61f2234b453
font_01_sfnt_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 10308 bytes
SHA-256: 22b1ac849cd224b3eefcaf9fe0190f24756f836f12091a7bc6cc7d8da05c4e14

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