Malicious PDF — malware analysis report

Static analysis result for SHA-256 64116735286bedb4…

MALICIOUS

PDF

343.7 KB Created: 2015-08-19 15:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-20
MD5: 496c7a4428f493a5fc26271e0102c459 SHA-1: c859003289486e1b47de372d79837cef86601956 SHA-256: 64116735286bedb48a5b75015779c8433ad3ddaed26a354abf6dab0ee8f7d027
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL is likely part of a phishing or malware distribution scheme, aiming to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • 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.
  • 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 http://botcraftman.ru/?lip&keyword=%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%B3%D1%82%D0%B0+%D1%81%D0%B0%D0%BD%D0%B0%D0%BD%D0%B4%D1%80%D0%B5%D1%81+%D0%BD%D0%B0+%D0%B4%D0%B5%D0%BD%D1%8C%D0%B3%D0%B8+1000000000&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627045_klyuch_dlya_cyber_tank.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627299_musuylman_korganuy_skachat.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627409_karta_belarusi_2015_dlya_navitel_android_skachat_besplatno.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005183f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5183F 9372 bytes
SHA-256: f684ed8927f684c20734e9b44c8aeaab0d93ca70eb6ef5e111e1098490735e74
font_01_sfnt_off000532be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532BE 14540 bytes
SHA-256: 00c2078a434383b084330c130cbfd66fdc7a65f47df4931637087a02c383aa39

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