PDF malware analysis — malicious · c7acb506de2ace88

MALICIOUS

PDF

44.0 KB Created: 2020-07-12 14:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 877f83549581442fb2c6705e286388d9 SHA-1: a9c52f4a30db56cfb2450c9d0eb2a3ef601ce3f5 SHA-256: c7acb506de2ace8880c18fdee4c5e8fca93b2baddf0add5cd16acdbc4be24593

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/wb?keyword=adobe%20cutepdf%20printer%20free%20download. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other PDF links indicates a link farm strategy to obscure the malicious destination.

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.ru/wb?keyword=adobe%20cutepdf%20printer%20free%20download
- http://files.cateringandcreations.net/uploads/1/3/0/8/130814513/9295549.pdf
- http://files.glyncor.com/uploads/1/3/1/4/131409508/71ac6f0d48e71.pdf
- http://files.hallingburychurches.co.uk/uploads/1/3/1/4/131409385/2468126.pdf
- http://files.mtnspinweave.org/uploads/1/3/0/7/130739419/247dba6ea7e70ce.pdf
- https://kusujeseb640712054.files.wordpress.com/2020/07/segigefagugobegunalujazop.pdf
- https://koxebitiz.files.wordpress.com/2020/06/pebedajisimumugeworof.pdf
- https://jejemapep.files.wordpress.com/2020/06/44496357400.pdf
- https://livasif.files.wordpress.com/2020/07/97269778596.pdf
- https://kejijewuna.files.wordpress.com/2020/06/27339876553.pdf
- https://zuxipume.files.wordpress.com/2020/07/suxasexifavufaj.pdf
- https://gelixoju890089821.files.wordpress.com/2020/06/dabobamunativ.pdf
- https://cdn.shopify.com/s/files/1/0431/9903/7595/files/62882247471.pdf
- https://cdn.shopify.com/s/files/1/0429/9853/0202/files/61099850379.pdf
- https://cdn.shopify.com/s/files/1/0428/3446/0828/files/digalitiradunefa.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
- https://cdn.shopify.com/s/files/1/0432/2230/2888/files/22720869644.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kurejala.pdf
- https://cdn.shopify.com/s/files/1/0430/0151/2090/files/girivima.pdf
- https://cdn.shopify.com/s/files/1/0427/4195/6775/files/28975738324.pdf
- https://cdn.shopify.com/s/files/1/0433/9000/9509/files/64627935806.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_off00006f00.bin` `97fbd846c994aeb6d2cfd7d32fcc60be1e5ee90edde28637328bde3d07f87372`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F00	5076 bytes
`font_01_sfnt_off0000805a.bin` `dfafa338b41b50754091fdbed4a48f2f85879f82167f3ed75932a00adae6882e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x805A	10188 bytes

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