PDF malware analysis — malicious · ac3dbb2717a9f41f

MALICIOUS

PDF

52.4 KB Created: 2020-08-19 22:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b7636ea07082c063b78d62ddc7a77820 SHA-1: 36138d9e5d840f455b908f1d44cac4d40b5d3dd0 SHA-256: ac3dbb2717a9f41ffa31ffdb8ab8c19e9636effb707b95dc0c2db21d78e19feb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=abolishing+performance+appraisals+pdf'. Another heuristic indicates a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=abolishing+performance+appraisals+pdf', reinforcing the malicious intent.

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=abolishing+performance+appraisals+pdf
- http://mutep.katelynnmills.com/uploads/1/3/1/3/131384169/podotumeke.pdf
- https://cdn.shopify.com/s/files/1/0427/7541/2902/files/muxabudotopopimaw.pdf
- https://cdn.shopify.com/s/files/1/0429/0281/4876/files/bevozitegejutivazujeruxi.pdf
- https://cdn.shopify.com/s/files/1/0434/5259/6374/files/sustainable_ecotourism.pdf
- https://cdn.shopify.com/s/files/1/0434/3165/7638/files/guxixozoxaxutex.pdf
- https://cdn.shopify.com/s/files/1/0427/7963/9967/files/bikorowimezu.pdf
- https://cdn.shopify.com/s/files/1/0430/8028/6372/files/91635432013.pdf
- https://cdn.shopify.com/s/files/1/0431/6558/1469/files/tifudisuz.pdf
- https://cdn.shopify.com/s/files/1/0435/0047/0438/files/enlaces_quimicos_conclusion.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9946/files/6222567093.pdf
- https://cdn.shopify.com/s/files/1/0430/8706/9348/files/lefinozuf.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
- https://cdn.shopify.com/s/files/1/0431/1662/6081/files/foucault_archaeology_of_knowledge.pdf
- https://cdn.shopify.com/s/files/1/0438/4315/8166/files/bexitozatakilawat.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_off00008221.bin` `13c0562f18abf73d5c3e006fe68e8b23862c9bf95ae65a621369f2b98e0647ae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8221	5404 bytes
`font_01_sfnt_off00009434.bin` `4fa8c8a8139f4728a76f410d82ba3b008dcbd29da23200f82c71a90b20bef3b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9434	10088 bytes
`font_02_sfnt_off0000b68f.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB68F	4324 bytes

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