PDF malware analysis — malicious · f3c71d495fdb2fce

MALICIOUS

PDF

37.2 KB Created: 2020-08-20 23:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b6e736eb9a09b2b033916b6f31b40b8d SHA-1: e504cb747b1e742b5e9aa8bf3b6a11025e5572d1 SHA-256: f3c71d495fdb2fce4595d24a7cd7ae34df81948013eb44daeda43d7943910e83

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests the PDF is designed to act as a link farm, ultimately directing users to malicious infrastructure.

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=craftsman+lawn+mower+manual
- http://files.mazamo.co.uk/uploads/1/3/2/6/132682897/rufub-rinizuki-peniwajisiwoxem.pdf
- http://files.artofmoses.com/uploads/1/3/0/9/130969981/3005476.pdf
- http://files.bluenosewoodworks.com/uploads/1/3/2/6/132681880/b0f078.pdf
- http://files.womansclubofspringlake.org/uploads/1/3/0/7/130739674/gobalan.pdf
- http://files.nabhanlaw.com/uploads/1/3/0/8/130815277/vunemowajemote-kotadijotoras.pdf
- https://cdn.shopify.com/s/files/1/0433/8604/4570/files/76160492444.pdf
- https://cdn.shopify.com/s/files/1/0433/7201/9877/files/gefirilazaxukuvil.pdf
- https://cdn.shopify.com/s/files/1/0440/5084/1750/files/sapomomeli.pdf
- https://cdn.shopify.com/s/files/1/0431/6112/5025/files/ccmb_phd_entrance_exam_question_papers.pdf
- https://cdn.shopify.com/s/files/1/0432/1217/7572/files/97442072986.pdf
- https://cdn.shopify.com/s/files/1/0434/5652/8541/files/amenaza_de_aborto_tratamiento.pdf
- https://cdn.shopify.com/s/files/1/0432/7325/7118/files/50256143774.pdf
- https://cdn.shopify.com/s/files/1/0434/0944/0924/files/pokemon_yellow_guide.pdf
- https://cdn.shopify.com/s/files/1/0432/3436/1508/files/76037220142.pdf
- https://cdn.shopify.com/s/files/1/0437/7290/3585/files/kilo_to_lb.pdf
- https://cdn.shopify.com/s/files/1/0432/2839/7728/files/98747395.pdf
- https://cdn.shopify.com/s/files/1/0428/3914/6662/files/liduwuwowuvafoduxutu.pdf
- https://cdn.shopify.com/s/files/1/0434/0583/6438/files/69317931613.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_off00005541.bin` `6ad6d8a7939ea3a42198b0e8ee9df66c9372a0f9bd01e860e3b40dc4685e4048`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5541	4912 bytes
`font_01_sfnt_off000065eb.bin` `086187c3f6ec6b4c884c28da15e78a7f783a1a252136171f958687abbd5c3c3b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65EB	9992 bytes

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