Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6d16ed41251a4f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 19:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4cdf0f223bd9e5972017c8ed567087 SHA-1: d9a35b886e9e3275c6c35738778b1e59930af0d8 SHA-256: 8b6d16ed41251a4fae59b547ecf39d12014ec0776b874f260be938303bf39a9d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning tactic. One prominent link directs to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body contains text related to 'Shyam baba bhajan lyrics' and the malicious URL, indicating a lure to trick users into clicking the link.

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.
  • 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.
  • 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.com/pify?keyword=shyam+baba+bhajan+lyrics
    • http://gudevimak.mixelle91.com/uploads/1/3/0/7/130775997/tujakebot-fotemimi.pdf
    • http://gejewot.artinheavenhellonearth.com/uploads/1/3/2/8/132814930/2365231.pdf
    • http://koris.larryhowlettcpa.com/uploads/1/3/0/7/130775971/bajufot.pdf
    • http://files.smithsstationruritan.com/uploads/1/3/0/7/130739308/mirawux.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/dremel_4000_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/gomomotulalajap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6063/files/83143471728.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/calendario_2020_con_festivos_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0429/1336/6182/files/boogie_woogie_piano_riffs.pdf
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/kagigex.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/47438028477.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/77530870337.pdf
    • https://cdn.shopify.com/s/files/1/0438/7821/9944/files/13686265734.pdf
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/manorama_year_book_2020_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/54714803172.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ea8.bin
61c09fd463a5e7d9c4fe0c7b659c5d674add102d225026cfca62af0e7ea253a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA8 5460 bytes
font_01_sfnt_off00006117.bin
e15537f1a5bfcd298f741fc9caf678c1c1c128b529cd3efaf0a299140a581cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 9656 bytes
font_02_sfnt_off0000824d.bin
2c2a31a4b694ec7aa3ba856661bb58a2146e6555b50279678391310e3a29893c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x824D 16064 bytes

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