Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc88a05e9aceb56…

MALICIOUS

PDF

350.7 KB Created: 2015-08-29 01:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: edad0f7088cfe6fdd5bd4aff872b29c9 SHA-1: 10e6ee0ca3862b8bc7fdce3ce3f9f7d87fceafa8 SHA-256: dfc88a05e9aceb5673cf13545442c135629469db5ff8986d3ab8790e263c216f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1071.001 Web Protocols

The file is a PDF document flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of compromise, likely serving as a lure to a malicious site. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

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%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%BD%D0%B0+%D0%B7%D0%B2%D1%83%D0%BA+%D0%B4%D0%BB%D1%8F+windows+xp+professional&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818192_metodichka__po__himii_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818104_tureckie__serialuy__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817711_arj__64__bit_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052fc8.bin
b9c3220f7810837fb4b66e7ee62cadfe1e2bb06b5c5c9003d653e07943deb04b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52FC8 9696 bytes
font_01_sfnt_off00054b30.bin
dcc328e59f1c6782a15e18fc181981f78035e6c261a951d0e5192097354967e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B30 16032 bytes

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