PDF malware analysis — malicious · f016a393dddf5a2e

MALICIOUS

PDF

55.7 KB Created: 2020-07-29 02:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a81dd632a1460352ee0daee5eb72fa85 SHA-1: d7dc259ff9b782c8c79b7bbc546ef9b40fb638a6 SHA-256: f016a393dddf5a2ee800a5a6e16ab49f5dd9f952061039ce87313cb34e48c4b5

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This indicates an attempt to lure users to a malicious site, likely for phishing or malware delivery. The document also contains a PDF link farm heuristic, suggesting a broader campaign to generate traffic or distribute content through numerous PDF files hosted on benign platforms like Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=consumer+reports+air+purifier+ratings
- http://files.jabcoassocinc.com/uploads/1/3/1/0/131070846/domebefi-nifol-kitifatagilab.pdf
- http://files.valleyviewpuppies.org/uploads/1/3/0/8/130873880/41b63142242eb.pdf
- http://files.heisk.com/uploads/1/3/0/7/130775825/9312958.pdf
- https://cdn.shopify.com/s/files/1/0431/3061/8011/files/rivuxugitokodakezepaki.pdf
- https://cdn.shopify.com/s/files/1/0430/5040/1943/files/nudabik.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
- https://cdn.shopify.com/s/files/1/0433/0009/4112/files/86856651977.pdf
- https://cdn.shopify.com/s/files/1/0433/5996/1237/files/10184311030.pdf
- https://cdn.shopify.com/s/files/1/0431/6993/9612/files/xifugemawazo.pdf
- https://cdn.shopify.com/s/files/1/0433/7975/3109/files/25508618340.pdf
- https://cdn.shopify.com/s/files/1/0434/4555/1271/files/fejafuzozewu.pdf
- https://cdn.shopify.com/s/files/1/0427/9861/2636/files/79238684615.pdf
- https://cdn.shopify.com/s/files/1/0428/3957/2643/files/30642398164.pdf
- https://cdn.shopify.com/s/files/1/0434/9604/6752/files/fejipisiwoxigure.pdf
- https://cdn.shopify.com/s/files/1/0430/9765/3397/files/10954169528.pdf
- https://cdn.shopify.com/s/files/1/0431/0673/0144/files/2085432815.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
- https://cdn.shopify.com/s/files/1/0434/3608/1308/files/39088750941.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_off00009cf7.bin` `884305c49a202e9db91c4cb632419d5ed269ca2a49216dfe72a2cb9dbd1ecf24`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CF7	5096 bytes
`font_01_sfnt_off0000ae31.bin` `a0f7ebe6c7a2bad3be960c4bbbc9761e9670f44cadaeda3c32a81bcc29f29f4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE31	10276 bytes

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