Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9aea6fa96dfc44…

MALICIOUS

PDF

77.8 KB Created: 2020-12-23 05:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: eadb5450ef25df88ef99bb70c162d115 SHA-1: fd984cf922deb4d996437426fc2b69e2446387ea SHA-256: cf9aea6fa96dfc440236543793f6e40a7a2705229be16a1427cd76891468cfb5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=pokemon+gen+7'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, consistent with 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://traffmen.ru/123?utm_term=pokemon+gen+7 In PDF document text
    • https://piminuwimizo.weebly.com/uploads/1/3/4/6/134674326/nebifolameso.pdfIn PDF document text
    • https://vuvudosav.weebly.com/uploads/1/3/4/5/134579130/4566291.pdfIn PDF document text
    • https://nugizutotenit.weebly.com/uploads/1/3/4/5/134502776/wuxubop.pdfIn PDF document text
    • https://wijizavop.weebly.com/uploads/1/3/4/3/134309393/e4a808d2b.pdfIn PDF document text
    • https://relugudikovok.weebly.com/uploads/1/3/4/2/134265752/e381d34909.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/2fd21e65-3049-4979-845a-7cd940e42320/40_days_purpose_driven_life.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/partnership_firm_deed.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/6568666265.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/xiwusaxawiretikev.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/email_sign_up_sheet_template_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/populuginuxukedivuzodigap.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/7477147985.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/studietrust_bursary_application_form.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_off0000e683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE683 3716 bytes
SHA-256: 437b25f4ae4fbb70e183f00e22134b20820b1f8d20b5b8310ec50a01d1b9a348
font_01_sfnt_off0000f3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CC 4636 bytes
SHA-256: 8692ad83f0d3048a30c1260575825f24f0d845c12ce75dbfeca02c9e5083a788
font_02_sfnt_off0001039a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 11180 bytes
SHA-256: 22402417831b3d6ac8f43eb9497310ae0c958def99bf50d285313147de1a4f27

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