Malicious PDF — malware analysis report

Static analysis result for SHA-256 394775f6f68bd93e…

MALICIOUS

PDF

175.6 KB Created: 2020-12-15 04:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b3e9294b0987d05a2922a37c3bd07834 SHA-1: b870e3fffd76ac51f14c2fa9ad6a53d62aa21d43 SHA-256: 394775f6f68bd93e464cc55aaf8b0ac8eac97efa125a8b2c341cbd8be9269e2d
154 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it links to known malicious redirector infrastructure, specifically pointing to 'cctraff.ru'. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'Choices hack no human verification'. This combination strongly suggests a phishing attempt designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://cctraff.ru/123?utm_term=choices+hack+no+human+verification In PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/depitapugonazis.pdfIn PDF document text
    • https://lonopowixeza.weebly.com/uploads/1/3/4/6/134620564/zagevejiwuvabas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/042d8705-187f-46b0-bbb6-ca3ef9e54253/zimafiruzopow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a81632-6e1e-4034-aaf9-689b92cfd441/14886770692.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc71b15418d7934ac7538d7/t/5fcf2e8f798354522d0a4e2c/1607413396737/antiyoy_slay_rules.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55805ea4a794d5662b1b8/t/5fc96054306caa37b3846626/1607032918838/fufuvevefaleb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64fadd8-7348-4a80-83f0-78799f62ce7d/turks_head_knot_paracord.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/balanopostitis_tratamiento_adultos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6eca3aa0dc1643a2e47a4/t/5fcb371bda45e86cca9ff72a/1607153436704/benawiladobiwaja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e844cd1e280355d45049/t/5fc48698a97599144e8976f1/1606715032492/52738198443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc77229-a998-43b1-88c6-599cc1c87cfd/vatuxadufafo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c113ff13940aa260d1f7/t/5fc9491db54438471376be49/1607026973384/72308457715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7663182d-782a-4141-89f9-c59feb25c652/nakashima_gallery_had_the_following_petty_cash_transactions_in_february_of_the_current_year.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24677 5120 bytes
SHA-256: c06152f952ea38b48cad314666696392b4a0c9565cb51be4968b3954ce85e4d7
font_01_sfnt_off000257a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x257A7 2904 bytes
SHA-256: 5acf14c68047cd769e4f6da34b8adbf597d3d09c235a51fa4bfba6b6ff830853
font_02_sfnt_off000263ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x263EA 12056 bytes
SHA-256: 02a3e02b1ee0c1aedc523abfcac38dea07bab785190d3e5e0749351a0aa8566a
font_03_sfnt_off00028c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28C92 16144 bytes
SHA-256: 835470b43b94bd9f68aadb54658794d6319feb43350640111c1793adb44b634f
font_04_sfnt_off0002a19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A19F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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