PDF malware analysis — malicious · 60b03dc152fbbbd0

MALICIOUS

PDF

37.7 KB Created: 2020-09-09 00:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b8a54916bb7e66b265b9f6f2034225b9 SHA-1: 1bb37a031da03020ee4773b35e6519ace58601ed SHA-256: 60b03dc152fbbbd069c794c816d566e89243f20de63885d1cd6d2eaa85cf1c72

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a link farm and another flagging a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/pify?keyword=chimta+taan+wajda+song', which is likely intended to lead the user to a malicious site. The presence of many external PDF links suggests an attempt to obscure the malicious destination or to generate traffic.

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.club/pify?keyword=chimta+taan+wajda+song
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/a2c2bc_9c7db205aeb34aba8247d24d3d2b8129.pdf
- https://static.usrfiles.com/ugd/804ff6_7cd6e10c20d644589d412bfeff73dc11.pdf
- https://static.usrfiles.com/ugd/221f3a_8c3c3242ce1642608d866705f29f8bbf.pdf
- https://cdn.shopify.com/s/files/1/0430/6393/5129/files/pdf_document_split_merge_software.pdf
- https://cdn.shopify.com/s/files/1/0432/8197/3403/files/idolaf_battle_born.pdf
- https://static.usrfiles.com/ugd/e7e4a0_0d69ab72261a4a70b947ecf966cef3b2.pdf
- https://static.usrfiles.com/ugd/fd7405_a9c5f5aee27345a480b401af6b80ff3e.pdf
- https://static.usrfiles.com/ugd/4c4e45_a236796d19414a04bf33f561c9ee1da5.pdf
- https://static.usrfiles.com/ugd/8de238_18f000fac0d6435e944edaea1c76ea5c.pdf
- https://static.usrfiles.com/ugd/9219f8_fa8b32dc98a14016bdd2080b0bb058ec.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004e06.bin` `6d085f804cdd4f41741ed5f03cb239fefe76b0769805585f588e5880fee41b2c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E06	5184 bytes
`font_01_sfnt_off00005f95.bin` `aeedd6e086de5417adbbe95e787bf6df7c731568d63ba47da609030dca5a06e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F95	13428 bytes

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