PDF malware analysis — malicious · f1f0e62ec5f0eb62

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 13:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a0444e2b06398a5f232480ca5958d2a7 SHA-1: 94ff58de32f15ba22e6ace3cb366a9ed270b8622 SHA-256: f1f0e62ec5f0eb6262668d5a2538a551db6e6cf00f57a3a48187cf69217a210c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=clownfish+care+sheet', is flagged as a malicious redirector. The presence of numerous links to external PDFs, many hosted on seemingly unrelated domains, suggests a tactic to manipulate search engine results or distribute malicious content indirectly. No scripts were extracted, and the document body contained mostly binary data and metadata.

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=clownfish+care+sheet
- http://pagatewo.bridgitkasperski.com/uploads/1/3/1/6/131637814/xetosod.pdf
- http://files.nestnnurture.com/uploads/1/3/0/7/130738548/wisana_nudawa_tijezoxulunije.pdf
- http://files.gowersartclass.com/uploads/1/3/2/8/132816036/bosavo.pdf
- http://files.motivatedqueen.com/uploads/1/3/0/9/130969634/2377994.pdf
- http://suzekep.lomondlogs.co.uk/uploads/1/3/2/6/132681647/f55163ee.pdf
- https://cdn.shopify.com/s/files/1/0437/6097/6021/files/lixefuxivemusojofen.pdf
- https://cdn.shopify.com/s/files/1/0428/0814/8127/files/95704545766.pdf
- https://cdn.shopify.com/s/files/1/0435/6869/3411/files/98506782594.pdf
- https://cdn.shopify.com/s/files/1/0434/6668/6617/files/miruduzutide.pdf
- https://cdn.shopify.com/s/files/1/0434/7245/3797/files/89238253218.pdf
- https://cdn.shopify.com/s/files/1/0429/9885/7891/files/16366830520.pdf
- https://cdn.shopify.com/s/files/1/0438/4056/9501/files/vifivemarowovujogawadaweg.pdf
- https://cdn.shopify.com/s/files/1/0435/8481/5263/files/29550720146.pdf
- https://cdn.shopify.com/s/files/1/0432/9524/4452/files/rumefurixutizukakutonut.pdf
- https://cdn.shopify.com/s/files/1/0429/2398/3001/files/13462503802.pdf
- https://cdn.shopify.com/s/files/1/0437/0766/2504/files/anemia_de_celulas_falciformes_en_embarazo.pdf
- https://cdn.shopify.com/s/files/1/0440/3098/4357/files/28962505038.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_off00006aa2.bin` `6cfe17dc9d28d12d1708ca42142ae0ca5965d42ece3c928cb4ec9cc874dd5ee3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AA2	4964 bytes
`font_01_sfnt_off00007b8d.bin` `5f36822fac7048ad93f13c59a658b729a0db9845c7d8cf8bfa15aa597b27f4e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B8D	10076 bytes

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