Malicious PDF — malware analysis report

Static analysis result for SHA-256 e964e9e4f9aeb9b3…

MALICIOUS

PDF

82.1 KB Created: 2021-05-22 19:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fe168aa6512da7309be0fc50d359f663 SHA-1: 808949f1d1d363114ee2f26ddefc408bbaaf942e SHA-256: e964e9e4f9aeb9b3dbaba255202188112c7c35ca8abaa27c12031bf51519ed27
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The embedded content, though heavily obfuscated, suggests an attempt to disguise the malicious nature of the document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=taylormade+m3+driver+adjustment+chart In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450046/normal_60196d994613e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466398/normal_600746793f33f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460043/normal_5ff441f00a51c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4347ca0-417f-4a5d-b816-c2d6e2e6843a/bemuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/54046919800.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/3155304088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d065d86-a382-45c0-83a3-fe1fd221ffb9/first_grade_mixed_addition_and_subtraction_word_problems_for_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9db3f632-bf97-431b-8643-92a86956f8f2/40413294955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d24b904-3bff-4ad7-abb4-72b930f10ecc/93437436778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ce4b79-14eb-47c3-a89c-a5e7ed472328/microsoft_excel_file_to_converter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d87cbb3c-c437-4de7-b235-3a528b3e54ee/51297258825.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/annapolis_mall_directory.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/xujoxuraxej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a7faf6-b2d4-40f3-8499-1d3a3f47e2db/896295788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a33e47-c8e9-4330-94a7-3c84926288c7/radius_of_convergence_of_taylor_series_of_1_cosh_x.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/1555638198.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/85437035978.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/62821142427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318c492b-4a2c-4cc1-8b2c-6b1ffb6ff695/can_plantronics_cs540_connect_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/lonedefabipetewij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9384c016-6f13-420b-b31f-77dc52461204/state_employees_credit_union_online_login.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/benawinoti.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_off00010240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10240 5532 bytes
SHA-256: 52e19aafa855b2ae587bd0a5d79fa76bf63bee4d34b928a9194b498e4171c51f
font_01_sfnt_off000114f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F3 10668 bytes
SHA-256: 3e26578a4156008d70997987e201c55f481054e95b32c83ac32236be7e786180

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