PDF malware analysis — malicious · 204776f6e615b7d6

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 02:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4fc2259449140798d6252ae616e448e SHA-1: 7acf62c115c3d1d6a78b1bdba50becae6cff57ca SHA-256: 204776f6e615b7d6c8e3952a5e32fcce03b422c7d0ff4d1c56bcf4bb947950ab

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary attack pattern involves redirecting users to potentially harmful sites.

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=physical+constants+nist+pdf
- http://files.atrimonta.com/uploads/1/3/1/8/131856706/af05c12b73e2b.pdf
- http://files.acollierastro.com/uploads/1/3/1/6/131607053/rovosiviwuxazum-rowemonedadix-futeja.pdf
- http://fomopuvu.yachtrockmiami.com/uploads/1/3/0/8/130873951/3c8e2f10d697433.pdf
- http://jezav.fcchristianchurch.net/uploads/1/3/1/8/131871980/2401cecb.pdf
- http://pofadiva.jwhitneyart.com/uploads/1/3/0/7/130775565/2726583.pdf
- https://cdn.shopify.com/s/files/1/0429/8362/0757/files/50326835090.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.pdf
- https://cdn.shopify.com/s/files/1/0438/2674/1405/files/7467005140.pdf
- https://cdn.shopify.com/s/files/1/0433/0805/6740/files/13025415753.pdf
- https://cdn.shopify.com/s/files/1/0433/0877/7637/files/2641183727.pdf
- https://cdn.shopify.com/s/files/1/0437/7765/4942/files/85609017488.pdf
- https://cdn.shopify.com/s/files/1/0439/1770/5371/files/945355743.pdf
- https://cdn.shopify.com/s/files/1/0432/8413/6086/files/51046965715.pdf
- https://cdn.shopify.com/s/files/1/0429/3217/5014/files/jipeporalokamesokala.pdf
- https://cdn.shopify.com/s/files/1/0431/0722/1658/files/mexufudamabezalibido.pdf
- https://cdn.shopify.com/s/files/1/0431/7318/3637/files/76469977224.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ff3.bin` `2c83e20da87294bdb0ccba76ab82feaedbaea645e0c49f3354a03a3dd9c09e84`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FF3	4920 bytes
`font_01_sfnt_off00007095.bin` `7bfe32d74ae29aca700d410808d6a7e9736f32c4ff950b307f6fef1b6c304e8e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7095	9844 bytes
`font_02_sfnt_off00009242.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9242	4324 bytes

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