Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ba48acd41ea624…

MALICIOUS

PDF

85.4 KB Created: 2020-08-04 20:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb8bf63e9089f345a21d7babde03b6a7 SHA-1: 7462980b2d3f8a0d8fa90a6650d7b434fcb093bb SHA-256: f1ba48acd41ea6247f15a05e68546687372e596df201162a26ee9b6281e31bd1
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a teachers day speech in Kannada. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that the link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or spamming activity. The document body contains obfuscated text and the primary malicious link.

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://ttraff.ru/pify?keyword=teachers+day+speech+in+kannada+pdf
    • http://files.indypendentnetwork.com/uploads/1/3/1/6/131637553/daxekebapibanot.pdf
    • http://files.truenorthsoul.com/uploads/1/3/0/7/130739991/gobojedifevip.pdf
    • http://fifirave.isetnb.com/uploads/1/3/0/7/130739415/pavirapix.pdf
    • https://cdn.shopify.com/s/files/1/0435/6449/9105/files/vigejede.pdf
    • https://cdn.shopify.com/s/files/1/0437/6998/7221/files/8109890902.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/john_wick_2_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0839/files/saziluxevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/hernia_de_disco_dorsal.pdf
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/94519814454.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/husqvarna_340_chainsaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/74215682151.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/45936180972.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/15700570940.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/nidosazukirixexisekavew.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009207.bin
d1e3c9e6b93e8436395e5397ef226b586677b978e72dd3f546f3581e9cf9292d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9207 4924 bytes
font_01_sfnt_off0000a2b8.bin
85f182854b6fabe9305b91767c4bbd6c527e6de0cef271f07d1b817c9f030a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B8 5044 bytes
font_02_sfnt_off0000b391.bin
6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB391 3720 bytes
font_03_sfnt_off0000bef2.bin
07c94f67be953b60228900981a9cfb23efdeef145d6f905900b162813fe44d94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF2 21440 bytes
font_04_sfnt_off0000f23d.bin
e8f0e384702c7d6c8dfb62797830eddf2ee30ae3004b9e15e5b47cf5db4efbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF23D 15012 bytes
font_05_sfnt_off000120ba.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120BA 4324 bytes
font_06_sfnt_off00012ebb.bin
d4619b2eddf0cf5324eaad8b94d571c914d6bdae6abd08f24c215f85de03931a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBB 6716 bytes

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