PDF malware analysis — malicious · c4dad8a429f3d8b3

MALICIOUS

PDF

117.3 KB Created: 2020-08-09 07:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9dd9c9ff7cac4ef873726ab8d31dc9f2 SHA-1: d8901dc5968202ce5bd01886a85d36e9c194f7de SHA-256: c4dad8a429f3d8b38ec5d13eaa07c4291a6ca4898757442f020c6445a64822c9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=aconsejamiento+pastoral+bernardo+stamateas+pdf+gratis`. This URL is likely used to redirect the user to a malicious site, disguised as a free PDF download. The document body also contains this URL, reinforcing the lure. The presence of a link farm heuristic further suggests a malicious intent to drive traffic.

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=aconsejamiento+pastoral+bernardo+stamateas+pdf+gratis
- http://files.donniemasters.com/uploads/1/3/1/4/131453401/eac85c14.pdf
- http://files.treeremovalftlauderdale.com/uploads/1/3/1/0/131069934/dijaki.pdf
- http://files.bgphotographic.co.uk/uploads/1/3/2/6/132681488/5199199.pdf
- http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdf
- http://files.bgphotographic.co.uk/u
- https://cdn.shopify.com/s/files/1/0433/3387/7914/files/77409781705.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdf
- https://cdn.shopify.com/s/files/1/0437/0215/7466/files/keferavopafozor.pdf
- https://cdn.shopify.com/s/files/1/0437/3282/8314/files/murder-_set-_pieces.pdf
- https://cdn.shopify.com/s/files/1/0431/5581/6599/files/29541751291.pdf
- https://cdn.shopify.com/s/files/1/0432/9376/9894/files/behavioral_neuroscience_books.pdf
- https://cdn.shopify.com/s/files/1/0434/5056/4773/files/rent_agreement_format_pune_in_marathi.pdf
- https://cdn.shopify.com/s/files/1/0431/7777/1164/files/sesol.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
- https://cdn.shopify.com/s/files/1/0430/9581/8397/files/15596593039.pdf
- https://cdn.shopify.com/s/files/1/0429/6258/3711/files/milupanikoxopoxisabolup.pdf
- https://cdn.shopify.com/s/files/1/0439/8468/3166/files/vureniwazofosej.pdf
- https://cdn.shopify.com/s/files/1/0428/1312/8871/files/isabel_allende_libros_paula.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_off0001879f.bin` `250ded9c32553ca3edc1628a68c013cd8e051ccfacd24733109f84aadf6badc1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1879F	5680 bytes
`font_01_sfnt_off00019ae3.bin` `03b4f4a5389966d90a33e6663678a947898b99bbd1b330a4c6ba762b90b0fc38`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19AE3	14180 bytes

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