PDF malware analysis — malicious · af204f2137e70e39

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 14:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6ff717bf293bd6abcfa89306895ac84 SHA-1: 630dfa279f53e96d9f05a4b436396ff416546cdb SHA-256: af204f2137e70e399bb4a6030650f205098b0472965fa5551ab3bb7a1ec1730a

128 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, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and references a 'download' lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. The primary malicious URL is 'https://ttraff.com/wix?keyword=adobe+acrobat+pro+dc+serial+number+list', which likely serves as the initial entry point for a malicious payload or further redirection.

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.com/wix?keyword=adobe+acrobat+pro+dc+serial+number+list
- https://static.usrfiles.com/ugd/6da380_552416ea30734a1ea4bb7e4548159eec.pdf
- https://static.usrfiles.com/ugd/d775a9_a4b610a6b5f94b2d861cc8cbc09666c7.pdf
- https://static.usrfiles.com/ugd/9b7d8a_52a719d2ce3c4afa8fb3e7ab5fa6084b.pdf
- https://static.usrfiles.com/ugd/078c79_fa65bf49733449c8a1c7925f0803f636.pdf
- https://cdn.shopify.com/s/files/1/0464/0912/1960/files/foxtel_tv_guide_rugby_world_cup.pdf
- https://cdn.shopify.com/s/files/1/0432/5959/2864/files/bobcat_553_specs.pdf
- https://cdn.shopify.com/s/files/1/0428/5267/9836/files/38341416169.pdf
- https://cdn.shopify.com/s/files/1/0432/1784/6432/files/barisal_board_ssc_result_2018_marksheet.pdf
- https://cdn.shopify.com/s/files/1/0432/8531/5737/files/fedex_freight_airbill.pdf
- https://static.usrfiles.com/ugd/0e2875_aa902443274a4ccdbd42e32bf2599122.pdf
- https://static.usrfiles.com/ugd/0c41e7_a120955a244646598d19cc21b4e7c484.pdf
- https://static.usrfiles.com/ugd/b8c837_59240b87a2df4a82886d87d09c4257d1.pdf
- https://static.usrfiles.com/ugd/98e298_6e509e85baa34a8cbe2d87f1e88b3058.pdf
- https://static.usrfiles.com/ugd/b8c837_b508ac2e86d046f5b0078f3fef4526a2.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000061e7.bin` `0d8fea88b3236ba742112291b4ff38124f390ce3aac2c5eba62a95f8cbb91e1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61E7	5348 bytes
`font_01_sfnt_off000073f2.bin` `03f8e85203f2b086b94846e52d434555c570caa454602d6432bbed3dda3ddba5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73F2	10056 bytes

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