Malicious PDF — malware analysis report

Static analysis result for SHA-256 13b8cc38f147d8e0…

MALICIOUS

PDF

185.9 KB Created: 2015-07-23 20:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 6ca8b7eb6d3f6f3c332a4bdc301d6448 SHA-1: 62635c61dd64d367c95d5992f207654728edd0a0 SHA-256: 13b8cc38f147d8e00f45a06b1c5dcd6fed613133b50c4bc84497b6c2b77c5f46
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 ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%92%D0%B8%D0%B4%D0%B5%D0%BE%D0%BA%D0%B0%D1%80%D1%82%D0%B0+gigabyte+d33006+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184441_bumer_notuy_na_bayan.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184378_algebra_7_klass_mordkovich_uchebnik_chitat_onlayn.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_off00023ff2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FF2 3556 bytes
font_01_sfnt_off00024d75.bin
aa2f973c1e2a60437410a440b3c421fc198e49f8d1a56736e84bdf295ce49126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D75 15064 bytes
font_02_sfnt_off00027c4e.bin
32b00ce293abe81ddc16b8357100843a6585b903a9b02b8625d2941a41a40936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C4E 14924 bytes
font_03_sfnt_off0002a7d6.bin
e4a244064285043d0b031489ba75fbaef75a58c9c6def0eb1a74d5fed0dd5ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7D6 7496 bytes
font_04_sfnt_off0002bdbc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDBC 6084 bytes
font_05_sfnt_off0002cd51.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD51 3752 bytes

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