PDF malware analysis — malicious · a02465ea4cbc821a

MALICIOUS

PDF

50.9 KB Created: 2020-08-04 06:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a1a84fd8fe1b92c2140e94bb5175df38 SHA-1: 78a52a727ebae91995dcf310349344191302b6e5 SHA-256: a02465ea4cbc821a21e8cbff87a90bb66d8298f65cfb1e860aa43e4eccc91073

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting PDF files, which is indicative of a link farm for SEO manipulation. One prominent link, 'https://ttraff.ru/pify?keyword=detective+byomkesh+bakshi+book+pdf', is flagged as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious infrastructure by masquerading as a book download.

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=detective+byomkesh+bakshi+book+pdf
- http://files.thewarriorlady.com/uploads/1/3/2/7/132740564/44c38c79de.pdf
- http://files.playgroundplayersproductions.com/uploads/1/3/1/4/131453633/44888cd.pdf
- http://files.kimkirch.com/uploads/1/3/0/7/130775827/welobozutudirol-fulunim.pdf
- http://files.slaythepe.com/uploads/1/3/1/3/131381976/nenawozarapib_dixowa.pdf
- http://files.smporterauthor.co.uk/uploads/1/3/0/7/130774993/7599989.pdf
- https://cdn.shopify.com/s/files/1/0430/1619/2153/files/jilowur.pdf
- https://cdn.shopify.com/s/files/1/0431/9736/6436/files/buwuwab.pdf
- https://cdn.shopify.com/s/files/1/0435/1049/7434/files/sw_kotor_mod.pdf
- https://cdn.shopify.com/s/files/1/0433/2794/6904/files/74609173953.pdf
- https://cdn.shopify.com/s/files/1/0432/0460/8155/files/17930788022.pdf
- https://cdn.shopify.com/s/files/1/0427/8085/2383/files/18034317669.pdf
- https://cdn.shopify.com/s/files/1/0432/9875/0629/files/solajat.pdf
- https://cdn.shopify.com/s/files/1/0429/1156/3932/files/29923932180.pdf
- https://cdn.shopify.com/s/files/1/0432/2656/2722/files/numpy_matrix_vector_multiplication.pdf
- https://cdn.shopify.com/s/files/1/0429/3568/1180/files/35777446016.pdf
- https://cdn.shopify.com/s/files/1/0433/0743/4142/files/kemonafonekuvovif.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006de7.bin` `ca0ec788c6f78d65637f31c9d4e4a93a0d700fc284a1fccc0b65f8f7603fa42b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DE7	5632 bytes
`font_01_sfnt_off000080f9.bin` `37928785ff10e6dd8419d8f687f34ae273946a8b039447397ec853031f54fc9d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80F9	4756 bytes
`font_02_sfnt_off0000908e.bin` `3d52587c41a89617fefe2941bf5b595e1d8b79dd7be209dfbd7805461602e1ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x908E	14652 bytes

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