PDF malware analysis — malicious · a13cbb5441b515e6

MALICIOUS

PDF

42.8 KB Created: 2020-09-01 23:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9d72e4452b8cd6c60e8aa815e1a7f31c SHA-1: b8c331ab7f2107d88577068951069906a02e9890 SHA-256: a13cbb5441b515e63e73ec322de04a7fd19a9bb917494a847f43e0069b1ba13e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'Brisbane broncos leagues club annual report' and the wkhtmltopdf application, suggesting a lure. The primary malicious link is likely intended to redirect the user to a phishing or malware distribution site.

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/wix?keyword=brisbane+broncos+leagues+club+annual+report
- https://cdn.shopify.com/s/files/1/0433/3663/0422/files/monolezavebe.pdf
- https://cdn.shopify.com/s/files/1/0429/0212/6755/files/orbit_er_linux.pdf
- https://cdn.shopify.com/s/files/1/0434/4178/2946/files/comparison_adjective_and_adverb_exer.pdf
- https://cdn.shopify.com/s/files/1/0429/2237/7375/files/sample_objections_to_form_interrogatories_california.pdf
- https://cdn.shopify.com/s/files/1/0431/6656/4503/files/70206087230.pdf
- https://cdn.shopify.com/s/files/1/0438/1723/8688/files/lenudisadulesuzamuta.pdf
- https://cdn.shopify.com/s/files/1/0434/5698/7303/files/29915606354.pdf
- https://cdn.shopify.com/s/files/1/0433/4334/7877/files/4911091518.pdf
- https://cdn.shopify.com/s/files/1/0431/4615/0039/files/dagagixako.pdf
- https://cdn.shopify.com/s/files/1/0437/5497/9477/files/17075872276.pdf
- https://cdn.shopify.com/s/files/1/0432/6644/1376/files/20833840879.pdf
- https://cdn.shopify.com/s/files/1/0435/7183/9135/files/definition_of_academic_achievement.pdf
- https://cdn.shopify.com/s/files/1/0429/8942/0695/files/miwaputemiri.pdf
- https://cdn.shopify.com/s/files/1/0431/0840/1316/files/67623421769.pdf
- https://cdn.shopify.com/s/files/1/0448/2433/0402/files/angry_birds_2_game_softonic.pdf
- https://cdn.shopify.com/s/files/1/0430/8094/1729/files/baxose.pdf
- https://cdn.shopify.com/s/files/1/0434/2946/2165/files/36399430912.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_off000065a7.bin` `b7bd6985e900bf9a0f9c32fd64825b4764ecfdf003ca583aa7426725bbaba6ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65A7	5292 bytes
`font_01_sfnt_off000077b0.bin` `8fad4fc8ad1ba3d39368064367998afbc63b86ed064096d1ee8aace1dbbfaa34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77B0	10748 bytes

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