PDF malware analysis — malicious · bf0e35e912269f58

MALICIOUS

PDF

46.5 KB Created: 2020-07-31 15:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a96a0377cc4e93f86baf6ccb888942d5 SHA-1: d919978c058ad94abb8ccf126a660f53ac8ed0bc SHA-256: bf0e35e912269f58e46e79d7114363df89b955ff388fd64867ccbbc1057e71fc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), suggesting an intent to lead users to harmful sites. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of a large number of external links is a strong indicator of a malicious distribution or phishing attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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.ru/pify?keyword=sonic+2+xl
- http://files.theraceshack205.com/uploads/1/3/2/3/132303269/bomenatito_kuvefuvir_nidujabofop_gusepis.pdf
- http://files.colecoach.com/uploads/1/3/1/8/131871687/3308f.pdf
- http://files.leapingharedesign.co.uk/uploads/1/3/1/4/131406202/6738836.pdf
- https://cdn.shopi
- https://cdn.shopify.com/s/files/1/0434/4466/6529/files/44790545181.pdf
- https://cdn.shopify.com/s/files/1/0427/7898/4614/files/fewokawozoxisexemabife.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
- https://cdn.shopify.com/s/files/1/0435/5611/0487/files/36516217773.pdf
- https://cdn.shopify.com/s/files/1/0430/7963/1012/files/jotodoninidimitani.pdf
- https://cdn.shopify.com/s/files/1/0428/1601/2455/files/3677161554.pdf
- https://cdn.shopify.com/s/files/1/0430/9286/9281/files/59908457510.pdf
- https://cdn.shopify.com/s/files/1/0430/3588/5725/files/87642620895.pdf
- https://cdn.shopify.com/s/files/1/0432/4913/9880/files/wivipefowulasoragoke.pdf
- https://cdn.shopify.com/s/files/1/0430/5456/3477/files/wirepanivugiguvuvejasak.pdf
- https://cdn.shopify.com/s/files/1/0427/6443/5612/files/fezesogesilukadofabimanu.pdf
- https://cdn.shopify.com/s/files/1/0434/8854/2872/files/69190253464.pdf
- https://cdn.shopify.com/s/files/1/0436/3006/7865/files/bagugu.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_off0000713d.bin` `66bd78fd8143dc52eb409bc0f3f2418f2dcea46c5481da48ef5cf59a303c7eb3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x713D	4204 bytes
`font_01_sfnt_off00007f6b.bin` `44746b91e876f33ba9dee524194473257c25f9effdc4d8f55b86611018a437fc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F6B	14692 bytes

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