Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99d0c45b5826af9…

MALICIOUS

PDF

66.8 KB Created: 2020-07-30 05:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a6d79590c8210ba3813a192fe69b5a0 SHA-1: 30b8380caea7d9149afb5144cacac611ff3d74a0 SHA-256: d99d0c45b5826af9202fc85ca0926004632020cba1d80520e06790335ba8a479
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates an attempt to lure the user to a potentially harmful site. Additionally, the file exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to '100 opposite words in marathi pdf' and 'wkhtmltopdf', suggesting a lure document. The primary IOC is the malicious redirector URL.

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=100+opposite+words+in+marathi+pdf
    • http://files.julijanahajdinjak.com/uploads/1/3/1/4/131406563/4837804.pdf
    • http://files.merakiah.com/uploads/1/3/1/4/131438038/refobula-raribavovavapes.pdf
    • http://files.advancedbenefitscorp.com/uploads/1/3/1/3/131398360/zusoroparisitogeveli.pdf
    • http://files.ncmusictherapy.org/uploads/1/3/1/4/131410952/4434666.pdf
    • https://cdn.shopify.com/s/files/1/0437/6952/8471/files/1718362411.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peregomosurexezobosezob.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/xemexeribireremawisiginob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/jopakefaguw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/lajadivuvegimawelu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/voxevofekepugabobate.pdf
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/15827825811.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/wutifi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/noluber.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/mixoralejipiwarutu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1128/2840/files/sedulapapulanisixeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/17532401712.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 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d5.bin
936bd167aa7f0d0ec1d4d86d0ed94c76fa56dfaae9134e9dc6ae511dfd9bff52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D5 5228 bytes
font_01_sfnt_off0000756a.bin
778061bc12a3e7806d52a1624391743f2e703f8cd6887dddafb994fe6bb204ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 5560 bytes
font_02_sfnt_off0000872a.bin
e23308bb06bff427f4fe2d795198e016b2e9db23d45fd702446b15ef1a1323d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x872A 3048 bytes
font_03_sfnt_off00009336.bin
6d897259d7ab9db79b0dbb16904cd99ff486aa7f4a475590a5d3e44eab6e0eed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9336 2328 bytes
font_04_sfnt_off00009dee.bin
d4cda5a9ecb2558448f754249352cd4d73a8f7efff03060ee9a54ebf713292d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEE 2604 bytes
font_05_sfnt_off0000a904.bin
b3976ad28991401f3a7e0d936621f3963ed8fd81aff5bedc9e25cf6548b1959b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA904 2108 bytes
font_06_sfnt_off0000b2d9.bin
c2af63b5b025dfb1732767d4b0569f581f7e560e8992b50f1f28aba98bf7c99e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D9 9968 bytes
font_07_sfnt_off0000d518.bin
034faa32ee38c0398b643e9206beda51dafd955daf144dce604235f6b7ada8fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD518 17016 bytes
font_08_sfnt_off0000edbf.bin
d404f64416bf1ff5ad76d6d0ab30c7620aa9735638cfece5436aad8d6ad80edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBF 2608 bytes

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