PDF malware analysis — malicious · 1baf45a95b57b558

MALICIOUS

PDF

40.8 KB Created: 2020-08-10 01:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b93448265a9632ae394d3bcf0f70915b SHA-1: c4b7da86355be46c652298688e3b88a702e23788 SHA-256: 1baf45a95b57b558686f7d0d6f73e679a3f83def73d943ad49e973058bf790c8

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, but one critical link to 'ttraff.com' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Ashrae psychrometric chart no 2 pdf' and the URL 'https://ttraff.com/pify?keyword=ashrae+psychrometric+chart+no+2+pdf', suggesting a lure to disguise malicious redirection. The presence of a link farm and a malicious redirector indicates a likely SEO manipulation or phishing attack.

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.com/pify?keyword=ashrae+psychrometric+chart+no+2+pdf
- http://files.chambersjewelry.com/uploads/1/3/0/9/130969588/6432813.pdf
- http://files.drwordsmiths.com/uploads/1/3/0/7/130775633/359552.pdf
- http://files.primalhumanperformancellc.com/uploads/1/3/1/3/131383651/ae137d40.pdf
- http://files.athanasios.co/uploads/1/3/2/6/132681033/xewemapawiri_kebomatapaf_lunug.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
- https://cdn.shopify.com/s/files/1/0435/2458/7674/files/37585627986.pdf
- https://cdn.shopify.com/s/files/1/0432/2259/7800/files/5020193857.pdf
- https://cdn.shopify.com/s/files/1/0434/8536/4390/files/papawexowawotudijo.pdf
- https://cdn.shopify.com/s/files/1/0431/7118/4794/files/75675420671.pdf
- https://cdn.shopify.com/s/files/1/0429/2929/1427/files/2821441890.pdf
- https://cdn.shopify.com/s/files/1/0427/5660/4070/files/65501652071.pdf
- https://cdn.shopify.com/s/files/1/0431/3333/7768/files/70728465559.pdf
- https://cdn.shopify.com/s/files/1/0434/6196/8025/files/application_letter_for_lecturer_position.pdf
- https://cdn.shopify.com/s/files/1/0438/6252/4069/files/kafabafezufix.pdf
- https://cdn.shopify.com/s/files/1/0432/4678/0566/files/79887234476.pdf
- https://cdn.shopify.com/s/files/1/0437/8555/2034/files/miwamon.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_off0000611c.bin` `8fbfeefb11aef7d56eca8b5a9cd4b1739cada2eb0e5438f7aa9eb2c93727e4da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x611C	5584 bytes
`font_01_sfnt_off000073fa.bin` `b5c0b80385450d9ab5ed4dc285987a38ea9dc6bd1a90b1cc14e1ddabb66055b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73FA	10108 bytes

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