PDF malware analysis — malicious · 468a325e4c3eedf0

MALICIOUS

PDF

54.7 KB Created: 2020-07-30 02:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb9fec32d1a24d9a1058849f48685f50 SHA-1: cf52f8fe385c39ee5f17ad867a14885da9ee8f52 SHA-256: 468a325e4c3eedf0cc217b61cbcfd5a0c966c6501efe74cd3ddfde4f39e15c2c

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, which is the primary attack vector. The document body, though heavily obfuscated, suggests a lure related to 'Wonderwall piano chords pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content. 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.cc/pify?keyword=wonderwall+piano+chords+pdf
- http://files.tikibooparties.com/uploads/1/3/2/7/132710780/vabura.pdf
- http://files.granitestatehydro.org/uploads/1/3/1/1/131164460/9682590.pdf
- http://files.petrichorartanddesign.com/uploads/1/3/2/3/132302953/4210650.pdf
- http://files.carpediem191.com/uploads/1/3/0/8/130874647/849497.pdf
- http://files.danielepiserchia.com/uploads/1/3/1/6/131607407/pafukujuzebix.pdf
- http://files.tikibooparties.com/uploads/1/3/2/7/13271
- https://cdn.shopify.com/s/files/1/0428/0880/3495/files/65793273780.pdf
- https://cdn.shopify.com/s/files/1/0432/3747/4466/files/bepidodaro.pdf
- https://cdn.shopify.com/s/files/1/0436/6693/1862/files/83686259077.pdf
- https://cdn.shopify.com/s/files/1/0438/1242/1789/files/2589327778.pdf
- https://cdn.shopify.com/s/files/1/0432/8253/0472/files/vonixijizotosaxikisut.pdf
- https://cdn.shopify.com/s/files/1/0429/1143/2857/files/sopiwasabajizivumimet.pdf
- https://cdn.shopify.com/s/files/1/0430/5872/5018/files/kadujafedabi.pdf
- https://cdn.shopify.com/s/files/1/0433/0084/7781/files/daxoriburabozawuri.pdf
- https://cdn.shopify.com/s/files/1/0433/8004/8023/files/megogipapujibawopalud.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.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_off0000772a.bin` `16e1e31a7c46db402bfdfbf167cc6d1feeb3005455b5ca6e9e887f2013d1137a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x772A	5056 bytes
`font_01_sfnt_off0000885e.bin` `4eb8d802ba7e9c6ec7d6768741bd2c44397ec7c14401b38070e20291677118c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x885E	15384 bytes
`font_02_sfnt_off0000b83c.bin` `a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB83C	16204 bytes

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