Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0e6bfc558f3051…

MALICIOUS

PDF

47.5 KB Created: 2020-08-24 12:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a10ce8c6421c17b0a1b6d187a98159b SHA-1: 447d81c4ff6b00b51ae49b575cf7004919a2be2f SHA-256: 8f0e6bfc558f3051b60112962b68d35c5e59e176186c7d6bfd50e87ed4fa12e7
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 a redirector service (ttraff.com). The document body, though heavily obfuscated, contains text related to 'tower defense crush android 1' and the malicious URL itself, suggesting a lure to a potentially malicious download or exploit. The presence of numerous external links, including a link to a redirector, indicates a malicious intent to direct users to harmful content.

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=tower+defense+crush+android+1
    • http://files.paysprovencal.com/uploads/1/3/0/7/130740231/rivajefevezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/79353935571.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/kujatatavuruk.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2828/files/buzomuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/hybridization_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/81483700479.pdf
    • https://cdn.shopify.com/s/files/1/0439/0181/2888/files/dj_mustard_vatos_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88065476392.pdf
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/38449588151.pdf
    • https://cdn.shopify.com/s/files/1/0437/7500/0730/files/5e_fighter_character_sheet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c38.bin
6f6c5a8fb5e62cfd2b6ff76f758e0f05a98695d5bac735cd019a42cb5e5649ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C38 2952 bytes
font_01_sfnt_off000066c5.bin
1eb48794d0f551acdea7d7cc167ed85c5267fc021169622700d19a88341bef7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5168 bytes
font_02_sfnt_off0000786f.bin
bd2dce77d67653977e40bb6638facee7412a7d57d47ad6838d4cd384a5b29d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786F 10356 bytes
font_03_sfnt_off00009c25.bin
313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 16060 bytes

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