PDF malware analysis — malicious · aaf782d0e723cef6

MALICIOUS

PDF

48.2 KB Created: 2020-08-21 20:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b0208af3c48bc33b003839b6fa00e033 SHA-1: 3a4d0f0bf865e4ab5c94799aead14c50bca1aaaa SHA-256: aaf782d0e723cef65c465ed389ba4eb6a5fd4051cc81c18348e23f7d0ff0240d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=chowk+bazar+fire+report', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a coordinated effort to lure users through seemingly innocuous document titles. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=chowk+bazar+fire+report
- http://files.videosparks.net/uploads/1/3/2/7/132712333/3319692.pdf
- https://cdn.shopify.com/s/files/1/0447/8582/7991/files/batman_hush_comic_espaol.pdf
- https://cdn.shopify.com/s/files/1/0434/4584/6168/files/88199640967.pdf
- https://cdn.shopify.com/s/files/1/0432/9455/6320/files/understandable_have_a_nice_day_template.pdf
- https://cdn.shopify.com/s/files/1/0431/0951/5413/files/xigajad.pdf
- https://cdn.shopify.com/s/files/1/0432/6568/7717/files/55019470366.pdf
- https://cdn.shopify.com/s/files/1/0450/5973/5704/files/bangla_autobiography.pdf
- https://cdn.shopify.com/s/files/1/0432/7525/5972/files/sokuvepuzubekidiwukatorif.pdf
- https://cdn.shopify.com/s/files/1/0436/2013/9170/files/circular_motion_physics_12_notes.pdf
- https://cdn.shopify.com/s/files/1/0432/8184/2341/files/32745019592.pdf
- https://cdn.shopify.com/s/files/1/0431/8022/8757/files/fill_in_the_blanks_with_articles_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0436/9845/4693/files/70000817541.pdf
- https://cdn.shopify.com/s/files/1/0429/6356/6755/files/tasefezitexowet.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ece.bin` `82ce69d638a60ffaef2664fa5bfa59a7f87e8c4de43d73df94dc6cfd70ff8f89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ECE	5032 bytes
`font_01_sfnt_off00007004.bin` `755bc3b7aeb88a43fe485757a536026aee23ebb9c4d170d6cd2ee4b996bc5b67`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7004	10236 bytes
`font_02_sfnt_off000090bd.bin` `fefeb898950a8ae260f19bbfddfa0a60dfac62de0bc098628422484ea35c148b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90BD	10284 bytes

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