PDF malware analysis — malicious · 028fdfafde3aece5

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 17:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: de72ddccd0266d195ce0115385002433 SHA-1: 0006dce7d55ca2704f7fb615fb1e2835b18d4c61 SHA-256: 028fdfafde3aece528078652e61d6a197f51b6dfbd1a3751908a21b625f31fcc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of links, including one to a known malicious redirector, disguised as a manual. The primary malicious URL is https://ttraff.cc/pify?keyword=butterball+oil+less+turkey+fryer+manual+pdf, which likely leads to a further malicious resource. The document's structure and content suggest it is part of a link farm or SEO poisoning campaign to drive traffic to malicious sites.

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=butterball+oil+less+turkey+fryer+manual+pdf
- http://wuzor.lilianholm.com/uploads/1/3/1/3/131381045/8421934.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/3791/7345/files/narovoze.pdf
- https://cdn.shopify.com/s/files/1/0431/6479/5046/files/90534833635.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5694/files/24723412532.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80789229335.pdf
- https://cdn.shopify.com/s/files/1/0447/3736/4117/files/dalubosenatodulubuvaxe.pdf
- https://cdn.shopify.com/s/files/1/0427/9471/3244/files/33583292023.pdf
- https://cdn.shopify.com/s/files/1/0431/4903/3640/files/26697992262.pdf
- https://cdn.shopify.com/s/files/1/0431/8281/7441/files/plane_analytic_geometry_formulas.pdf
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/19274412206.pdf
- https://cdn.shopify.com/s/files/1/0436/5615/1190/files/18990941849.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_off00005e6f.bin` `d96592b991be0ea0f52cffa8056f875b9b3a212a68780f53f5049dc10e96b441`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E6F	5540 bytes
`font_01_sfnt_off00007135.bin` `6fcd1e3304d7983bdff40acad0f0aa32791f44b55986529376193eaf5cdc0de0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7135	10424 bytes

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