PDF malware analysis — malicious · 17a6bf150848dddc

MALICIOUS

PDF

42.5 KB Created: 2020-08-15 02:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 68849e7283d3a86b16fd99520c3775c2 SHA-1: ccfbd6593745d244f2a66325814b4986f3c411cf SHA-256: 17a6bf150848dddc69cb31325c4f486cf33db2396a01e12fa93e99bfd2b4a0ed

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=vype+epen+3+user+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content as a user guide. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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.com/pify?keyword=vype+epen+3+user+guide
- http://files.fiddleheadmarina.com/uploads/1/3/1/4/131454012/didobamugexaxelojule.pdf
- http://divegewu.craigengstrom.ninja/uploads/1/3/2/6/132696021/69eded.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/4078/5062/files/non_probability_sampling_types.pdf
- https://cdn.shopify.com/s/files/1/0429/7208/6435/files/surrealismo_literario.pdf
- https://cdn.shopify.com/s/files/1/0429/3342/0195/files/72048517963.pdf
- https://cdn.shopify.com/s/files/1/0433/6100/9829/files/vawozozu.pdf
- https://cdn.shopify.com/s/files/1/0440/4235/4853/files/71001339029.pdf
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/12993023281.pdf
- https://cdn.shopify.com/s/files/1/0447/9657/5904/files/rotuwavoxudulakididifib.pdf
- https://cdn.shopify.com/s/files/1/0438/3604/7522/files/manual_de_taller_chevrolet_captiva_2009.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_off000068a3.bin` `64d8e67fc17976fd81002c5c482df8924fb9541b01efaf1008e89d6a67c2faa6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68A3	5116 bytes
`font_01_sfnt_off00007a24.bin` `43f348626b750eb1b4fb6f22a20ed472189056fc995b967f8cbe390be1aef825`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A24	10352 bytes

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