Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aadab760662c56d…

MALICIOUS

PDF

147.9 KB Created: 2020-11-14 06:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 246d81cb22929c438384f8144f668137 SHA-1: 5c3da1aa934e55c85cd779acb455901e70c53711 SHA-256: 7aadab760662c56d97b321610c92317b9e1a9c7ce7fbe0f8bbe5e273df2483b0
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://cctraff.ru/123?utm_term=7+for+all+mankind+mens+jeans+outlet`. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier and ClamAV also flagged this PDF as malicious, supporting the phishing or malware distribution intent. No scripts were extracted, but the presence of embedded URLs suggests a potential for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=7+for+all+mankind+mens+jeans+outlet In PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/lorewuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379234/normal_5f8a64ad96b7c.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/39df1fbc1ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5fa1b1e311352.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/2092662795d09.pdfIn PDF document text
    • https://zijubanefim.weebly.com/uploads/1/3/4/3/134349059/40f572.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/xunaxavelikuta_xidotesebolew.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/jipowumat/arrival_of_the_queen_of_sheba_piano_duet.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/dartball_board_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/dexuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/rs3_fishing_training_guide.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00020743.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x20743 31260 bytes
SHA-256: e859c44bebab3c9baee86ce27bbf68d9fa7a16101b393348db7bc871e0dd21ea
font_00_sfnt_off0001be18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BE18 4032 bytes
SHA-256: b956c19d428afcb46ff54644da157c3ee34ea1368b67197a8ffc3bcfb3a7d8a2
font_01_sfnt_off0001cc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC94 5176 bytes
SHA-256: e094b0b2715bc65f41a1008ce04ce206852f17a6c3bddd628f5e7ff50349d575
font_02_sfnt_off0001de25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE25 12480 bytes
SHA-256: 067aee173bdc4dd2e3fda56f2d701d4509ae0c47431f6a4f9289936991d8ee90

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