Malicious PDF — malware analysis report

Static analysis result for SHA-256 58734df1c974a35e…

MALICIOUS

PDF

61.1 KB Created: 2020-12-03 19:20:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e649c92a5f3b42e5a7cd1ad52589ea5c SHA-1: d5989d569739b7422e1476f358dc2589f4307793 SHA-256: 58734df1c974a35e1825496f6f558d94cc53079ac77c65b7da906d231c0a30d6
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 'traffine.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=market+basket+londonderry In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376852/normal_5f8d540a6a240.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/aea79a06-4360-461c-9750-0a523f291e65/timefokafewil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e26a28-c511-4207-88ea-91ad11e2b19c/lerazoxojizutavegux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7740a47-8ccd-420a-8943-ff4638214581/2217916242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d1b8b4-ef3e-41b0-a4a1-4c303ed31067/tikuzadobogotivoxaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b1eadf-924d-47fa-bca2-033876b7e847/86917291437.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc281d924b06a7eb3097406/t/5fc7a6354f9413233b285d8f/1606919733496/fiwoderawerowixuv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc173ecdf132613bbc1a931/t/5fc63d477acac6192a967ace/1606827335656/87162709446.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de9c5bcb0228a2825217/t/5fc146b0f3de5e49b5936231/1606502067018/bagusoditew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4650dc4-74d4-442b-bb73-b06ea9b67308/49290824346.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc3e3032dd96f59186593b2/1606673156367/wijema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fb9ad96-1cc9-41ed-a3be-ba36881ca1e7/89069986465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e9dd52-cf3d-469a-b1a2-7c9c489b17df/sinepoxurikikupewosefojuz.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_off0000b301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB301 5132 bytes
SHA-256: 45fee2be970cc10d71b5b0b43fc73fcd11ffeda0cbfced07e145ea2e978791f4
font_01_sfnt_off0000c494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC494 10596 bytes
SHA-256: d98e8d20db4558e3baf103401bd8288cbe6ef16f505b1eb51f2a1fb7ce3a347e

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