PDF malware analysis — malicious · c8d0d09787acd23b

MALICIOUS

PDF

56.3 KB Created: 2020-08-29 06:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d097db1b22bf27a164a2cd6bf9849cc6 SHA-1: 8db45b709951e334fd0b86590e691a5619d9919b SHA-256: c8d0d09787acd23befa92b6f4f3fec9c623a3189a0570a945e812156beaa3867

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a URL associated with malicious redirector infrastructure, disguised with a search query for a song. The document body, though heavily obfuscated, contains the same redirector URL and multiple links to Shopify-hosted PDFs, suggesting a link farm designed to obscure the ultimate destination. The ML classifier strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=jugni+ji+arif+lohar+free+mp3+downloa
- https://cdn.shopify.com/s/files/1/0432/1188/2655/files/ganisutapukekogaweravi.pdf
- https://cdn.shopify.com/s/files/1/0431/3251/8554/files/57996931832.pdf
- https://cdn.shopify.com/s/files/1/0429/7113/6154/files/26388477858.pdf
- https://cdn.shopify.com/s/files/1/0438/3830/8512/files/tijenupaxubaxurutazo.pdf
- https://static.usrfiles.com/ugd/b8c837_e10ee5f6e76d49589f79dae644af953f.pdf
- https://static.usrfiles.com/ugd/b8c837_bb2dab041f91476bbe2e1167e20a9945.pdf
- https://static.usrfiles.com/ugd/b8c837_c0f0038b036a46fb83fd4948d088a571.pdf
- https://static.usrfiles.com/ugd/b8c837_f09e7c95316f4fa48aca75a811768719.pdf
- https://static.usrfiles.com/ugd/b8c837_0ef679854fea45288d56e30c085e44bb.pdf
- https://static.usrfiles.com/ugd/b8c837_821648b7c17e4019bf625a92ac4bc5d1.pdf
- https://static.usrfiles.com/ugd/b8c837_22a61ac8063440f0b6ac9a509f4e206d.pdf
- https://static.usrfiles.com/ugd/b8c837_77ca199deae448acbbea2621e45f71ec.pdf
- https://static.usrfiles.com/ugd/b8c837_e4c465ee7e6a408c8d8be83b0200bc22.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_off00008ccd.bin` `279550b74f890a93d00b5a38b38b059ea29036fed5f0849a367687800779c4ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CCD	5600 bytes
`font_01_sfnt_off00009fc7.bin` `b2f9785fd105b6339f81e9a2d7043b2653885bb4e9f727dc1c1a2485050dcf1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FC7	16140 bytes

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