PDF malware analysis — malicious · 3a6eb7a6a49d61a7

MALICIOUS

PDF

31.7 KB Created: 2020-08-18 21:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4454a51db4888548a0f3353b26662466 SHA-1: 60271add65d77f3333c31f9d7b7a26c88127d68d SHA-256: 3a6eb7a6a49d61a740eb3f0d3332790eb8e64dc028a583b851c017c3e57bd121

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=free+celebration+background+image'. This link is presented within the document body, disguised as a free background image download, which is a common social engineering tactic. The file also contains a large number of external PDF links, many hosted on shopify.com, suggesting a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector URL, which likely leads to further malicious 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.cc/pify?keyword=free+celebration+background+image
- http://files.laurencedeadionneart.com/uploads/1/3/1/4/131407698/9207073.pdf
- http://files.frhistory.com/uploads/1/3/0/7/130775242/203b3fdac6dc1c0.pdf
- https://cdn.shopify.com/s/files/1/0447/1940/7257/files/windows_server_2008_keys.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.pdf
- https://cdn.shopify.com/s/files/1/0431/2013/2257/files/libetipozokosukimul.pdf
- https://cdn.shopify.com/s/files/1/0435/9297/4499/files/46285198313.pdf
- https://cdn.shopify.com/s/files/1/0437/7162/5621/files/animation_character_design_books.pdf
- https://cdn.shopify.com/s/files/1/0435/8370/1151/files/razikizijakelejilukeditij.pdf
- https://cdn.shopify.com/s/files/1/0434/8156/3286/files/18234625469.pdf
- https://cdn.shopify.com/s/files/1/0429/2568/6951/files/rinebubalaberutop.pdf
- https://cdn.shopify.com/s/files/1/0429/5298/2684/files/84854254645.pdf
- https://cdn.shopify.com/s/files/1/0445/9141/5460/files/the_strength_training_anatomy_workout_2.pdf
- https://cdn.shopify.com/s/files/1/0430/9703/0817/files/45265869043.pdf
- https://cdn.shopify.com/s/files/1/0432/2358/0830/files/wawurumevebetozipus.pdf
- https://cdn.shopify.com/s/files/1/0431/0790/9794/files/36487380077.pdf
- https://cdn.shopify.com/s/files/1/0429/2945/5263/files/podcast_script_template.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_off000042e1.bin` `1358544644b9fed6d2d2517fa6e5dd7defd86445a29461659042fb13dc879c13`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x42E1	5240 bytes
`font_01_sfnt_off00005498.bin` `6b625ca4da261ca5c29eb4e0e9e77f4e6f7e3bae712e2593b6c1525290b97717`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5498	8632 bytes

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