Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca822350f3fb2b35…

MALICIOUS

PDF

186.2 KB Created: 2015-07-23 21:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: acbff269eb52a4d1e43f110cdf094aa4 SHA-1: e04d34b3c9661bd4a4a73f532017116741b3e190 SHA-256: ca822350f3fb2b358568e05d4fa2d2c67c78bfd40dc83a9138ce92407a61f616
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was 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 malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not parsable.

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%9A%D0%B8%D1%82%D0%B0%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D0%BC%D0%B0%D1%81%D1%81%D0%B0%D0%B6%D0%B5%D1%80+health+herald+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184648_skachat_zvuk_aski_na_sms.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184777_proekt_metallicheskogo_garazha.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184357_speed_art_skachat_programmu_dlya_risovaniya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024442.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24442 3556 bytes
font_01_sfnt_off000251c5.bin
8ba6b4ba4f1f3a2be3ca826c52adef93fe9c472feda16ab071ced15556faa58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251C5 14300 bytes
font_02_sfnt_off00027e33.bin
05e84e603df934d082ecb9799b3870de51e547491bb0c010bac7ddacaf5928b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E33 14680 bytes
font_03_sfnt_off0002a962.bin
b4cab2bfe09c465e18b5092dd5ceec019971bc94311c2c34e30676b1a7000816		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A962 7360 bytes
font_04_sfnt_off0002bed5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BED5 6084 bytes
font_05_sfnt_off0002ce6a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE6A 3752 bytes

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