PDF malware analysis — malicious · cb3050bb5dfdc7f7

MALICIOUS

PDF

57.5 KB Created: 2020-08-07 09:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: abbe3e22599dffa8a3556daf3e6b1dfb SHA-1: 7e3f07e5b2c598d3f1a558a4cad86550203ba3de SHA-256: cb3050bb5dfdc7f70c8e7ebd11fa4ac48358fe210185d3c31488bb3c4aa296f3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that points to a URL designed to trick users into downloading further content. The document body, though heavily obfuscated, contains text related to a calisthenics routine and includes the malicious URL. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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=rutina+completa+de+calistenia+pdf
- http://files.littlelanedaycare.com/uploads/1/3/0/8/130814605/3989805.pdf
- http://files.alpenglowyarn.com/uploads/1/3/0/7/130738917/xobobaxipena.pdf
- http://linenazuz.norfolkaggieparentnetwork.org/uploads/1/3/0/8/130874493/nisajawabefava_puwuwu.pdf
- https://cdn.shopify.com/s/files/1/0430/1648/7065/files/fuluxaxafiwi.pdf
- https://cdn.shopify.com/s/files/1/0431/0604/2013/files/35252652248.pdf
- https://cdn.shopify.com/s/files/1/0431/3415/6967/files/64562174444.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5688/files/xiritavimudufujipuvileme.pdf
- https://cdn.shopify.com/s/files/1/0430/0016/8607/files/82324259114.pdf
- https://cdn.shopify.com/s/files/1/0433/4472/4133/files/boxedufezokobivoj.pdf
- https://cdn.shopify.com/s/files/1/0431/5689/7947/files/56911049558.pdf
- https://cdn.shopify.com/s/files/1/0436/0355/8564/files/12560632601.pdf
- https://cdn.shopify.com/s/files/1/0431/6695/7722/files/gotutefebimovatob.pdf
- https://cdn.shopify.com/s/files/1/0428/0736/1703/files/46157616628.pdf
- https://cdn.shopify.com/s/files/1/0431/0971/2033/files/how_to_mirror_an_object_in_maya.pdf
- https://cdn.shopify.com/s/files/1/0431/3363/2661/files/karudijikozedenepodil.pdf
- https://cdn.shopify.com/s/files/1/0432/2433/4498/files/51254951315.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_off00008999.bin` `8208a34b915cabab8f297afb801dc546fac9ce775177c8c495749782807320fb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8999	5212 bytes
`font_01_sfnt_off00009b4f.bin` `e604af97b57c9e4c07d1581af1e22ecd6c01191aeed4d100d51a280319ddb5eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B4F	11616 bytes
`font_02_sfnt_off0000c144.bin` `531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC144	16312 bytes

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