PDF malware analysis — malicious · 537a55edb4551f31

MALICIOUS

PDF

59.4 KB Created: 2020-07-28 23:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b0a421e18742495521dc1aa866849680 SHA-1: 519727e7bf530e0846757a55587b1e8adb232b33 SHA-256: 537a55edb4551f31b38c2c524241bad602a39bb95647dc083e84c65f58886f9d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Tamilrockers.cc 2019 movies', suggesting a lure to pirated content, which is a common phishing or malware distribution tactic.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=tamilrockers.+cc+2019+movies
- http://files.neksscottishrite.com/uploads/1/3/0/7/130775432/tasobogadedidul.pdf
- http://files.susanwattgrade.com/uploads/1/3/2/6/132695746/pofamulaker-mowanejogavo-vimelavubam.pdf
- http://files.jamesmatthewwilson.com/uploads/1/3/1/6/131637057/d1e23bb.pdf
- http://files.lizzdunich.com/uploads/1/3/1/1/131164153/5011388.pdf
- https://cdn.shopify.com/s/files/1/0437/7152/7325/files/wukuwedon.pdf
- https://cdn.shopify.com/s/files/1/0430/9313/1425/files/kelamudoruradonilibafanag.pdf
- https://cdn.shopify.com/s/files/1/0434/0737/6546/files/wesexekoso.pdf
- https://cdn.shopify.com/s/files/1/0432/6073/9752/files/10799665689.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdf
- https://cdn.shopify.com/s/files/1/0434/7301/0845/files/jawetarodatubeliv.pdf
- https://cdn.shopify.com/s/files/1/0434/8405/3669/files/wiwetirurezuvi.pdf
- https://cdn.shopify.com/s/files/1/0428/2561/3475/files/kobudox.pdf
- https://cdn.shopify.com/s/files/1/0430/7940/1632/files/58136805360.pdf
- https://cdn.shopify.com/s/files/1/0428/9354/1532/files/65020069451.pdf
- https://cdn.shopify.com/s/files/1/0430/7173/3917/files/falirul.pdf
- https://cdn.shopify.com/s/files/1/0435/5942/0063/files/81397334527.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00009a2c.bin` `d85dc55e5faf033150e613f9e9c8a438e19079d1c6bdf51cce53cda73c47ed6c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A2C	5132 bytes
`font_01_sfnt_off0000ab91.bin` `19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB91	1936 bytes
`font_02_sfnt_off0000b4d7.bin` `ee89d02d709aa7621cb9592f7d86c24c18584e53a078b454c10be73f3a6c8db1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB4D7	13244 bytes

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