PDF malware analysis — malicious · a5b6df3c3229d2cc

MALICIOUS

PDF

39.4 KB Created: 2020-08-20 03:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bda0f67b37455c2af62bfdc616c8ff20 SHA-1: 4155b65f0d9f4f82518570a7bd0de178e3da248b SHA-256: a5b6df3c3229d2cccb9bae7ec0a267a99df7ee54e63a3170830bc8b1f45ef955

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large link farm. The document body contains obfuscated text and a URL that points to a known malicious redirector. The primary intent appears to be to lure the user to malicious infrastructure through a deceptive link farm.

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=contrast+conjunction+worksheet
- http://ruxepokuk.threadsolelife.com/uploads/1/3/0/7/130776257/1739243.pdf
- http://files.azureskygifts.com/uploads/1/3/1/6/131607374/kozavusu.pdf
- http://files.indianasicklecell.org/uploads/1/3/1/4/131408364/vuniriwifotor.pdf
- http://files.rhythmsofawoman.com/uploads/1/3/1/8/131871625/poxexakoluwemamo.pdf
- http://files.narinesookram.com/uploads/1/3/1/4/131483584/xidenike.pdf
- https://cdn.shopify.com/s/files/1/0428/4969/7959/files/mubuxeditajisu.pdf
- https://cdn.shopify.com/s/files/1/0434/1907/4722/files/11647000955.pdf
- https://cdn.shopify.com/s/files/1/0440/4248/5910/files/munoxu.pdf
- https://cdn.shopify.com/s/files/1/0449/8187/8942/files/guia_ada_espaol.pdf
- https://cdn.shopify.com/s/files/1/0434/7009/4501/files/etymology_bible.pdf
- https://cdn.shopify.com/s/files/1/0436/1561/7182/files/93735813645.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
- https://cdn.shopify.com/s/files/1/0438/6874/9979/files/38102516053.pdf
- https://cdn.shopify.com/s/files/1/0431/6548/3172/files/67745850661.pdf
- https://cdn.shopify.com/s/files/1/0434/4401/1168/files/phys_x_loader._dll.pdf
- https://cdn.shopify.com/s/files/1/0433/7483/7918/files/glencoe_health_answers_chapter_3.pdf
- https://cdn.shopify.com/s/files/1/0438/9722/5368/files/laxuzimiduvura.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_off00005026.bin` `d49883225b918106a187ef74ff188179c90bf687ae90540b9a18d6b18e6a73c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5026	4992 bytes
`font_01_sfnt_off0000612d.bin` `9c4b4dd12d27c77b3097d3e665b84123941a039b17fb1daaac7942176b241d92`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x612D	9824 bytes
`font_02_sfnt_off000082be.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82BE	4324 bytes

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