PDF malware analysis — malicious · c26a35f15207e565

MALICIOUS

PDF

45.1 KB Created: 2020-07-31 05:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a02223848930709ac62d17c94879a032 SHA-1: 90b0b0b2dd951dcc369a522db7f33f929881f406 SHA-256: c26a35f15207e565322f8aa7cdc729a55627d53257d028a431c23603ef2e27bc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically `https://ttraff.com/pify?keyword=tipos+de+hernia+abdominal+pdf`. It also contains a large number of external PDF links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning attempt. The document body, though heavily obfuscated, contains text related to 'tipos de hernia abdominal pdf' and 'wkhtmltopdf', reinforcing the lure. The ML classifier also strongly flagged this PDF as malicious.

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=tipos+de+hernia+abdominal+pdf
- http://files.homelumberinc.com/uploads/1/3/0/7/130740017/361f61.pdf
- http://files.artincement.net/uploads/1/3/1/4/131407572/gerolavevok.pdf
- http://files.petcremationcare.ca/uploads/1/3/0/7/130775431/famamaropomizid.pdf
- https://cdn.shopify.com/s/files/1/0432/7204/4697/files/62700943268.pdf
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/16953589509.pdf
- https://cdn.shopify.com/s/files/1/0434/8890/3325/files/88570340592.pdf
- https://cdn.shopify.com/s/files/1/0433/7801/6406/files/84701795456.pdf
- https://cdn.shopify.com/s/files/1/0434/8156/3286/files/53773195340.pdf
- https://cdn.shopify.com/s/files/1/0428/6165/8279/files/77157186977.pdf
- https://cdn.shopify.com/s/files/1/0430/3932/6365/files/66894486036.pdf
- https://cdn.shopify.com/s/files/1/0431/1564/3031/files/figux.pdf
- https://cdn.shopify.com/s/files/1/0434/4836/9309/files/39577533640.pdf
- https://cdn.shopify.com/s/files/1/0428/5097/5910/files/kamesaw.pdf
- https://cdn.shopify.com/s/files/1/0432/9085/3531/files/tixarodelo.pdf
- https://cdn.shopify.com/s/files/1/0429/4246/4163/files/15667060205.pdf
- https://cdn.shopify.com/s/files/1/0431/9900/4831/files/pokanopor.pdf
- https://cdn.shopify.com/s/files/1/0430/8221/9674/files/zetuze.pdf
- https://cdn.shopify.com/s/files/1/0439/8442/1022/files/95221037454.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/
- https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000072f6.bin` `f86b325b0e428c0a3b90dc31e9f6269a2083907344be6c4a2a5d98c9742a3e02`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72F6	5076 bytes
`font_01_sfnt_off000083ef.bin` `7d668109fac21bbb1d21446635f9df93223e3152f3f1501f3b96ceb01a5dbead`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83EF	10240 bytes

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