Malicious PDF — malware analysis report

Static analysis result for SHA-256 003ff7ed4f56344f…

MALICIOUS

PDF

66.6 KB Created: 2020-11-10 07:53:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1279f2bbd709b1d0464f0c93b78b159a SHA-1: d410eb91f1af32e799856db06b25c198d201ff14 SHA-256: 003ff7ed4f56344f71a1ae421bf1a8e4bf062b9ae782a5952ad585f2bfed2e1d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The 'SE_CLICKFIX' heuristic indicates social engineering tactics designed to trick users into executing commands. The embedded URL, 'https://gettraff.ru/123?keyword=ucf+early+signing+2019', is the primary indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://gettraff.ru/123?keyword=ucf+early+signing+2019
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f8e1d585b121.pdf
    • https://cdn-cms.f-static.net/uploads/4388276/normal_5f91a92735206.pdf
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f8b9e794f2f2.pdf
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5f8c75bb81451.pdf
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5f91331b2cf09.pdf
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f8b4b0aeaecd.pdf
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8719909c1ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a5bf642d-b852-4838-a073-904b0aad9e1e/chapter_29_to_kill_a_mockingbird_vocabulary.pdf
    • https://uploads.strikinglycdn.com/files/65e562dd-70c1-47bc-b5ab-fb17804700a8/sims_4_drama_club_cheats.pdf
    • https://s3.amazonaws.com/nerugiraxura/we_never_close_po-boys_new_orleans.pdf
    • https://s3.amazonaws.com/zuxadol/aap_beeti_in_english.pdf
    • https://s3.amazonaws.com/felasorarabipis/lixusewuvagagamasev.pdf
    • https://uploads.strikinglycdn.com/files/b735f694-b6de-4059-9dee-21f1c4383d61/jololado.pdf
    • https://uploads.strikinglycdn.com/files/667cc553-5a41-4c7d-bb5c-ab067b1f71ca/vufatozokoputisuxafinewu.pdf
    • https://uploads.strikinglycdn.com/files/01cdf228-c15d-4090-b43b-7839869791c6/petetetejofe.pdf
    • https://uploads.strikinglycdn.com/files/b78fba2c-0bc8-41de-a40d-efdca37ff811/14485243508.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c846.bin
94290cd72398a6c52481a57675e3166f2955d0c7d07c6943a6f60e279189b02d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC846 5624 bytes
font_01_sfnt_off0000db85.bin
488d867723d46158ca0576fa5eba9baa3073585b838c684732943c9aad8f4456		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB85 10024 bytes

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