PDF malware analysis — malicious · a8e31cd709da782a

MALICIOUS

PDF

48.0 KB Created: 2020-07-31 07:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9f467ebbcaba16e4c3225f48995f8034 SHA-1: f79647cacdef9af0054a7ce6d113a95cba0940a9 SHA-256: a8e31cd709da782ae37a8d35968ad408ac8e42aab0a0fa8910c400fd9c898eb4

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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to car transmission systems, likely serving as a lure. The primary attack pattern involves redirecting users to malicious infrastructure via these embedded links.

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=automatic+gear+transmission+system+in+cars+pdf
- http://files.rockpaperjoy.com/uploads/1/3/1/3/131383764/suzegututeza-menaxa-givimuzope-wufitamaz.pdf
- http://files.pjsjerky.com/uploads/1/3/2/6/132682342/tilepidudux.pdf
- http://files.cookiesnobcrochet.com/uploads/1/3/1/3/131384573/1b2ff4283.pdf
- http://files.middletownfamilypharmacy.com/uploads/1/3/0/7/130775231/cbca23f27a3.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
- https://cdn.shopify.com/s/files/1/0430/0334/7098/files/dajovatinerutomopefarol.pdf
- https://cdn.shopify.com/s/files/1/0428/1827/3446/files/31722906603.pdf
- https://cdn.shopify.com/s/files/1/0434/7261/7637/files/25801832292.pdf
- https://cdn.shopify.com/s/files/1/0432/6653/9673/files/luvijiro.pdf
- https://cdn.shopify.com/s/files/1/0435/2966/6724/files/1264999074.pdf
- https://cdn.shopify.com/s/files/1/0430/6042/8962/files/62706232642.pdf
- https://cdn.shopify.com/s/files/1/0431/6839/9524/files/99097640159.pdf
- https://cdn.shopify.com/s/files/1/0432/7030/7995/files/31686906953.pdf
- https://cdn.shopify.com/s/files/1/0432/8561/0654/files/pizimajuxusijo.pdf
- https://cdn.shopify.com/s/files/1/0436/8039/9513/files/18087250397.pdf
- https://cdn.shopify.com/s/files/1/0429/6415/6582/files/61515663357.pdf
- https://cdn.shopify.com/s/files/1/0432/8249/7701/files/16479736856.pdf
- https://cdn.shopify.com/s/files/1/0437/3191/0821/files/bidunedutexaf.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/
- https://cdn.shopify.com/s/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007efc.bin` `9c501959cdcca945ceb29c0834f3e100f9051ec2ed2a2d9abf41f5296251ab04`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7EFC	5416 bytes
`font_01_sfnt_off00009150.bin` `4eca3d42c3c1c2350f3e3f76b9ed80681383c4e657dc6d3e1c3970b91f723578`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9150	9612 bytes

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