Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fa97d7d77d9c1c…

MALICIOUS

PDF

183.3 KB Created: 2015-07-23 20:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a3197c578a59d1ba85d39cab9c4cb3f5 SHA-1: 2b553ad22c44677e0b370806f526ba5d7f12502f SHA-256: d8fa97d7d77d9c1c04a9c021ee68eebf26518a4449d4c2c83780ff1b47cd68e8
98 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains an embedded link to a known malicious redirector. The link, http://botcraftman.ru/?lip&keyword=Pipboy+3000+fallout+3+theme+android&charset=utf-8, is likely intended to lure the user to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=Pipboy+3000+fallout+3+theme+android&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184356_1s_kompleksnaya_avtomatizaciya_8_samouchitel_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184361_skachat_maynkraft_152_na_russkom_yazuyke_na_kompyuter_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184349_fb2_knigi_skachat_besplatno_bez_registracii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000237eb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x237EB 3556 bytes
font_01_sfnt_off0002456e.bin
108d3dcccf716456a21d5c3b1881eb0e33e8d155c6ed586b83604b868d00f772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2456E 14872 bytes
font_02_sfnt_off000272f3.bin
37b85a42dbedd3db9bb340d5f9ed6b0586fc4882429fbeb0bfaa590905ab7604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x272F3 15216 bytes
font_03_sfnt_off00029f60.bin
d3163473056b754738aee0cf703535b514aaa07602f8e5c06c3bb50cc73e0e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29F60 6908 bytes
font_04_sfnt_off0002b35a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B35A 6084 bytes
font_05_sfnt_off0002c2ef.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2EF 3752 bytes

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