PDF malware analysis — malicious · af43a347aa067b88

MALICIOUS

PDF

54.0 KB Created: 2020-08-08 02:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a2abf02c9c43130f13894ea5014dd0c6 SHA-1: 92626bea8cf9978681727c403b5051904a21e537 SHA-256: af43a347aa067b8835c146e11bcbfa9a0548a58f7c2b483b2e2b7ecc3dd1924c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=autocad+2020+pdf+import+scale'. This URL is presented as a lure to trick users into believing they are accessing relevant information. The document also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or traffic generation. No scripts were extracted from this sample.

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.ru/pify?keyword=autocad+2020+pdf+import+scale
- http://files.eatatluscious.com/uploads/1/3/1/4/131437987/8323884.pdf
- http://jawuwi.parakleseos.net/uploads/1/3/0/8/130874207/bovelule.pdf
- http://files.academyofnatureandwildlifearts.org/uploads/1/3/1/8/131872054/wigepufaxub.pdf
- https://cdn.shopify.com/s/files/1/0432/4527/3251/files/17598612643.pdf
- https://cdn.shopify.com/s/files/1/0430/5669/3397/files/28134495245.pdf
- https://cdn.shopify.com/s/files/1/0429/5612/8412/files/94535591469.pdf
- https://cdn.shopify.com/s/files/1/0428/9937/4233/files/24513766226.pdf
- https://cdn.shopify.com/s/files/1/0434/7507/5225/files/60791763043.pdf
- https://cdn.shopify.com/s/files/1/0430/3552/5282/files/16538848189.pdf
- https://cdn.shopify.com/s/files/1/0430/6075/6641/files/educacin_en_alimentacin_y_nutricin.pdf
- https://cdn.shopify.com/s/files/1/0431/9281/1669/files/dhcr_fact_sheets.pdf
- https://cdn.shopify.com/s/files/1/0435/5316/1367/files/brussels_airport_terminal_map.pdf
- https://cdn.shopify.com/s/files/1/0429/5429/3402/files/nuvugugunuruvakejonejid.pdf
- https://cdn.shopify.com/s/files/1/0432/7692/7142/files/65731999457.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/81155999214.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_off000084fb.bin` `224d99915c4c43a8c09247f3f96307870b4cb33cf5d110ebf7f3a51c65532b7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84FB	3936 bytes
`font_01_sfnt_off00009326.bin` `85a6eee267683d4c0ae516489fb5e16d52386f79c9442c51364327263a30a465`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9326	5564 bytes
`font_02_sfnt_off0000a602.bin` `6fb43acbf4cddd4d23e5b8ff3d473730c1772b2cf5cb5e6bace60925c55c7e03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA602	10700 bytes

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