PDF malware analysis — malicious · d1005bd24875fb12

MALICIOUS

PDF

55.4 KB Created: 2020-08-08 20:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 989db1b84dfaff8a6735a07bc5a75099 SHA-1: 81053a2de6b57a6068c3f49b364bcd8f4b72dbd4 SHA-256: d1005bd24875fb126d4ac0ec1dea6048a8716a882ec35f881ddcdd2e63a05ad1

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 ML classifier also strongly indicated maliciousness. The presence of a link farm suggests an attempt to manipulate search engine results or redirect users to malicious content, potentially for SEO poisoning or phishing.

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=walden+two+pdf
- http://files.kcfearfarm.net/uploads/1/3/1/4/131406537/pidopi.pdf
- http://files.itisifairytales.com/uploads/1/3/1/4/131454304/2609505.pdf
- http://files.andfairphotography.com/uploads/1/3/0/8/130874284/db4f4ce83fe.pdf
- http://files.barnes1ststepft.com/uploads/1/3/2/6/132681891/zosowadugug.pdf
- https://cdn.shopify.com/s/files/1/0439/3448/2587/files/dead_space_android.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdf
- https://cdn.shopify.com/s/files/1/0438/3644/0726/files/vitazanipimigulelafefuga.pdf
- https://cdn.shopify.com/s/files/1/0446/9764/9306/files/what_time_is_afternoon_and_evening.pdf
- https://cdn.shopify.com/s/files/1/0430/3188/8035/files/nomilox.pdf
- https://cdn.shopify.com/s/files/1/0433/8260/3927/files/wonabetanuju.pdf
- https://cdn.shopify.com/s/files/1/0430/1701/1353/files/rikat.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
- https://cdn.shopify.com/s/files/1/0433/4164/3928/files/29639940872.pdf
- https://cdn.shopify.com/s/files/1/0433/6409/0006/files/95972157090.pdf
- https://cdn.shopify.com/s/files/1/0433/9384/3356/files/pdf_convert_to_black_and_white.pdf
- https://cdn.shopify.com/s/files/1/0433/0989/1742/files/69797996689.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdf
- https://cdn.shopify.com/s/files/1/0433/9469/5324/files/reactor_idle_cheats.pdf
- https://cdn.shopify.com/s/files/1/0431/2032/8864/files/piwabadifa.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00009c8b.bin` `225a7cbf5daf96a13dbda35277facbc20c1762682406ba5144e85a2529833075`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C8B	4868 bytes
`font_01_sfnt_off0000ad4b.bin` `b5a7cce6d92eb4fb1db2e751efc14514cff1ed78efb59d87bdac602768b23823`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAD4B	10756 bytes

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