Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b21fa31e0f4a209…

MALICIOUS

PDF

187.7 KB Created: 2015-08-05 13:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 4eef5cf088258dbb129cf0c66129503d SHA-1: 805e336afa6fd6657114a93e60d490b3dbe27830 SHA-256: 0b21fa31e0f4a209a9691b8681407a93071206842d2c371007e3e1af7338f1f4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link strongly suggests a malicious intent, likely related to social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%D1%8F%D0%BD%D0%BD%D1%8B%D0%B5+%D0%B4%D0%B5%D0%B2%D1%87%D0%BE%D0%BD%D0%BA%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304478_skachat_kartu_na_maynkraft_18_gorod_moskva.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304543_skachat_vizio_2007_besplatno_na_russkom_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304435_skachat_batman_arkham_city_pc_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024940.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24940 3556 bytes
font_01_sfnt_off000256c3.bin
802bb1ac3512f303e9486d3a42695dab16712af5887957740f47b1478653c491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256C3 15196 bytes
font_02_sfnt_off00028578.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28578 14468 bytes
font_03_sfnt_off0002b02a.bin
b1a85af7401ba424095c112fdf0b6d0c03cc63d7452b4bb3259fcf7137cf74d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B02A 7160 bytes
font_04_sfnt_off0002c4f2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4F2 6084 bytes
font_05_sfnt_off0002d487.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D487 3752 bytes

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