PDF malware analysis — malicious · 163f04e61e7e6c01

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 03:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f42bb2d32bc95d8f16fce695aefa2428 SHA-1: 84a9a14f45a33c8ea57ac33e9f510fc48e305c8c SHA-256: 163f04e61e7e6c01aedf2b68d1c071ffb3b6c84c909c0b5e6405e244e6f05219

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify, suggesting an attempt to appear as a legitimate link farm or SEO spam. No scripts were extracted, but the presence of a malicious redirector and the ML classifier firing strongly indicate malicious intent.

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/pify?keyword=b+d+diesel+performance+abbotsford+bc
- http://mevizabab.raquelharrington.com/uploads/1/3/2/7/132710621/36fb46.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/1254/5950/files/felotimiwojowonifu.pdf
- https://cdn.shopify.com/s/files/1/0428/4078/5062/files/jurnal_tentang_boraks_dan_formalin.pdf
- https://cdn.shopify.com/s/files/1/0433/9456/4252/files/53424032731.pdf
- https://cdn.shopify.com/s/files/1/0430/3106/8825/files/kodi_genesis_2016.pdf
- https://cdn.shopify.com/s/files/1/0430/3526/3138/files/xepepobe.pdf
- https://cdn.shopify.com/s/files/1/0428/7243/8947/files/transformers_g1_all_autobots_and_decepticons.pdf
- https://cdn.shopify.com/s/files/1/0430/7258/5888/files/bigupopaga.pdf
- https://cdn.shopify.com/s/files/1/0432/1977/9742/files/descargar_bilibili_apk.pdf
- https://cdn.shopify.com/s/files/1/0428/9026/4742/files/bupelo.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_off000060e5.bin` `09dd40422b7e1ba1b2cc6eafef5ce5c3759d18d295289a0751082f40c83af4f0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60E5	5492 bytes
`font_01_sfnt_off00007370.bin` `ccd96264b385badc43a292c858041a6f7e207f59a100a2a7a53d2ef0b4d5e5f0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7370	10988 bytes

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