PDF malware analysis — malicious · 30ba4a273963ed8d

MALICIOUS

PDF

56.6 KB Created: 2020-08-14 09:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 038cb41dd9609fee266387b741ac8de2 SHA-1: 669221bc15f827af70b276622103ee6d4879514d SHA-256: 30ba4a273963ed8d6a6291f628be9e3a395c3248377ee1cdb7bc8ec15c0d98b5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/pify?keyword=bairi+kangana+bhojpuri+movie+song, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users through these links, which are likely part of a phishing or malware distribution scheme.

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=bairi+kangana+bhojpuri+movie+song
- http://files.ryanpfouts.com/uploads/1/3/0/7/130738696/kiwanizi.pdf
- http://files.theherbalkeyapothecary.com/uploads/1/3/0/7/130738531/7166399.pdf
- http://files.nbhsffa.com/uploads/1/3/0/8/130814432/9279288.pdf
- https://cdn.shopify.com/s/files/1/0430/2936/4885/files/amado_mio_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0434/8785/4749/files/56177469202.pdf
- https://cdn.shopify.com/s/files/1/0432/7240/5157/files/zugikewuzumabu.pdf
- https://cdn.shopify.com/s/files/1/0430/6193/6285/files/benoguvixa.pdf
- https://cdn.shopify.com/s/files/1/0432/8521/7436/files/59314161960.pdf
- https://cdn.shopify.com/s/files/1/0429/6844/9180/files/24340739594.pdf
- https://cdn.shopify.com/s/files/1/0440/6591/5032/files/polaris_indy_500_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/6980/8548/files/magewe.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdf
- https://cdn.shopify.com/s/files/1/0432/7155/3189/files/guxigakawefu.pdf
- https://cdn.shopify.com/s/files/1/0433/9197/5580/files/32684230216.pdf
- https://cdn.shopify.com/s/files/1/0432/9707/9460/files/rejon.pdf
- https://cdn.shopify.com/s/files/1/0430/1049/0519/files/denufitikegu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
- https://cdn.shopify.com/s/files/1/0438/5836/2518/files/synonyms_and_antonyms_practice.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_off000095ac.bin` `0c2676bb0d489ca6885d52b63374d133b1038a9c77e4f8c9694cdfb6a6ecfb03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95AC	5588 bytes
`font_01_sfnt_off0000a889.bin` `c59dce5459c8f65c661d9cd9f1914d23fad920ebd322adab685eb2c9fc784e0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA889	14308 bytes

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