Malicious PDF — malware analysis report

Static analysis result for SHA-256 8995cf442fe54311…

MALICIOUS

PDF

75.0 KB Created: 2020-12-22 00:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04b3569b323e19479ae7680e850a20dd SHA-1: d4b10367928d91a11a792e64fd532b8193b47354 SHA-256: 8995cf442fe543116294f627121fdc3ff2d2ff52857b0dcf9431f13e90f323f0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it redirects to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to a redirector, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=electrical+circuit+breaker+finder+kit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fde9718c66bff209e816f84/t/5fdf019e459323513bd9a2bd/1608450463661/ponodexup.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0668ef3361272aed630d/1606223465516/fetedazobufebodumujeva.pdf
    • https://static1.squarespace.com/static/5fc37333be9b6939511afe46/t/5fccc41f6f0099009e611add/1607255092002/vilabedilaripak.pdf
    • https://uploads.strikinglycdn.com/files/2e6e3480-e38f-484d-8148-5653a8cf450d/anker_mouse_driver_mac_os.pdf
    • https://uploads.strikinglycdn.com/files/d55f16cc-6f89-4e14-a9b1-cac278ff464e/ivet_dog_food_where_to_buy.pdf
    • https://static1.squarespace.com/static/5fc383e42cf09257bd7c65aa/t/5fc5c7ca3485235c868f2f49/1606797259447/certificate_of_decree_of_adoption_missouri.pdf
    • https://static1.squarespace.com/static/5fc6b554d2523e4b70bcdb4b/t/5fd67c66d654060362cbca07/1607892076208/naruto_shippuden_opening_16_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/50b3c351-ec06-409c-9adf-9e845c130027/69790365451.pdf
    • https://uploads.strikinglycdn.com/files/516c22a5-9f61-4575-bb3c-4ff2e88d3b93/90710967629.pdf
    • https://uploads.strikinglycdn.com/files/208b18e4-a141-430d-a5ce-e9a199b4433f/27229665150.pdf
    • https://uploads.strikinglycdn.com/files/7d375aac-b369-4c2c-9108-af51b6363549/dowepitepebabavalisumujaz.pdf
    • https://uploads.strikinglycdn.com/files/360ee2fc-c4d1-435b-9a9e-5516afd80e83/35324739947.pdf
    • https://uploads.strikinglycdn.com/files/47f7fae9-2b19-4057-9672-a324e4f2379f/virujefi.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_off0000e9e6.bin
282d334e57e195da68212569d0afbd2787c4db3c5417953f2ef68e3e3848e9e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 5000 bytes
font_01_sfnt_off0000faf9.bin
2a5999292f374c9221957f3d7013120dcd9c0b7baeda55490c9b69fa2a1457e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF9 10472 bytes