PDF malware analysis — malicious · 3042735cd7be991c

MALICIOUS

PDF

48.1 KB Created: 2020-08-30 22:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3278de1a13e45362991f057319cb0674 SHA-1: f7f2224b5d227eb227154581b2c33d14df17f47f SHA-256: 3042735cd7be991ce51a45f4d4366f5a32eca65d1e5105d763a7a67b30125d3f

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm pointing to numerous shopify URLs, with one primary redirector URL identified as malicious. The ML classifier strongly indicated maliciousness. The document body contains garbled text but includes the malicious redirector URL and several shopify URLs, suggesting a lure to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=slimvance+core+slimming+complex+revi
- https://cdn.shopify.com/s/files/1/0452/7413/6738/files/42572432154.pdf
- https://cdn.shopify.com/s/files/1/0438/2051/5488/files/datopenetinis.pdf
- https://cdn.shopify.com/s/files/1/0434/9788/1766/files/school_uniforms_sale_2019.pdf
- https://cdn.shopify.com/s/files/1/0428/7266/8319/files/administracion_publica.pdf
- https://static.usrfiles.com/ugd/bb13a2_5b41805ba9ff4ee39a32d8f0d19fd1b9.pdf
- https://static.usrfiles.com/ugd/b8c837_32d0e5eec7444aec95b8c0c306ace257.pdf
- https://static.usrfiles.com/ugd/b8c837_4d88feceb1d34f07a902010f38dc25c3.pdf
- https://static.usrfiles.com/ugd/d94ae5_dd26eaa891b54413b53bfa94990d4fcb.pdf
- https://cdn.shopify.com/s/files/1/0459/9601/5773/files/91762443597.pdf
- https://cdn.shopify.com/s/files/1/0428/0408/4899/files/61845827040.pdf
- https://cdn.shopify.com/s/files/1/0435/3818/6394/files/bayesian_belief_network.pdf
- https://cdn.shopify.com/s/files/1/0431/8461/9681/files/73035613000.pdf
- https://static.usrfiles.com/ugd/5ad03d_02521e5171bf42579169f56df168a45b.pdf
- https://static.usrfiles.com/ugd/b8c837_a549923e13cf4248b8a2f4a604685c78.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_off00007c4d.bin` `e1d387f79184b26bf8e41e681573b51b1b98ff1da2d93b75d0735af3c1713c9c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C4D	5484 bytes
`font_01_sfnt_off00008ed2.bin` `b01f4afabe5c4679fe07633681d8419dac72846c79b7d22b91f46b9e23c6b817`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ED2	10720 bytes

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