PDF malware analysis — malicious · 92c233a9a36b757f

MALICIOUS

PDF

45.7 KB Created: 2020-07-29 15:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c23e86fb417ba5e1dd3e1831487ac18c SHA-1: a7592f76ed66b0a0e1828b2c88dcf2b9533c3429 SHA-256: 92c233a9a36b757f773c627be45656600d9f482702420801f867008b91183b10

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a redirector service (ttraff.ru). This indicates a link farm or redirection attack designed to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily truncated and unreadable.

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=las+barreras+de+la+comunicacion+pdf
- http://files.ritchielawok.com/uploads/1/3/0/8/130813991/veviwafulo.pdf
- http://files.kvrclub.com/uploads/1/3/0/7/130775940/jasedotajifu-tupuke-patawuboro.pdf
- http://files.americanscribbler.com/uploads/1/3/1/4/131438418/nuvaxijukasaragitudu.pdf
- http://files.firstclassathletics.com/uploads/1/3/2/3/132302941/2282438.pdf
- http://files.yogashak.com/uploads/1/3/0/9/130969910/zevuru.pdf
- http://files.firstclassathletics.com/uploads/1/3/2/3/13230
- https://cdn.shopify.com/s/files/1/0432/2587/4600/files/79169317366.pdf
- https://cdn.shopify.com/s/files/1/0431/1403/7397/files/54402467396.pdf
- https://cdn.shopify.com/s/files/1/0438/7618/8315/files/56765072149.pdf
- https://cdn.shopify.com/s/files/1/0431/6450/0122/files/56615732991.pdf
- https://cdn.shopify.com/s/files/1/0429/2172/2015/files/magazobisurikimukogut.pdf
- https://cdn.shopify.com/s/files/1/0430/7327/4018/files/38538221850.pdf
- https://cdn.shopify.com/s/files/1/0437/4790/1592/files/zetobivokow.pdf
- https://cdn.shopify.com/s/files/1/0437/3282/8314/files/kokapalaza.pdf
- https://cdn.shopify.com/s/files/1/0430/9313/1425/files/78510508902.pdf
- https://cdn.shopify.com/s/files/1/0434/3237/8517/files/19576362833.pdf
- https://cdn.shopify.com/s/files/1/0434/6901/3144/files/jomojitepawutif.pdf
- https://cdn.shopify.com/s/files/1/0431/1013/8017/files/56251967746.pdf
- https://cdn.shopify.com/s/files/1/0432/1430/7496/files/27845683959.pdf
- https://cdn.shopify.com/s/files/1/0429/6966/1589/files/zelezeronilirizipogu.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_off0000729a.bin` `7aa25eb51b9bb4e34adb0a1c2e37d728d3ec88b332e9954d459f20dcba2acb7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x729A	5184 bytes
`font_01_sfnt_off00008411.bin` `e70d6db8a9e57c946139b4aecfcbf9001eb4a722ff9b2b7ff55bc1918e475bc8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8411	11080 bytes

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