PDF malware analysis — malicious · 9ea4b5a3ee891ed8

MALICIOUS

PDF

47.9 KB Created: 2020-09-02 00:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 218ec3b2398414eaff0defd61a619ddc SHA-1: cce69e54010c95f7ee5a77caa09b8c35c52a6976 SHA-256: 9ea4b5a3ee891ed8f5ef4cd4552674cd594d5865811e75c16e276e032a282b32

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.ru. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious.

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=gujarat+express+platform+no+at+vadodara
- https://cdn.shopify.com/s/files/1/0429/9004/3287/files/jofemewujawalobaxari.pdf
- https://cdn.shopify.com/s/files/1/0439/3769/3851/files/navinonisegufav.pdf
- https://cdn.shopify.com/s/files/1/0434/5489/0149/files/bubotufibabixurowenamok.pdf
- https://cdn.shopify.com/s/files/1/0428/7430/6719/files/wawuboniduna.pdf
- https://cdn.shopify.com/s/files/1/0432/6660/5211/files/wararubujod.pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1560/files/rezuna.pdf
- https://cdn.shopify.com/s/files/1/0436/5628/2265/files/23763916237.pdf
- https://cdn.shopify.com/s/files/1/0431/8792/9252/files/pacific_fitness_malibu_home_gym.pdf
- https://cdn.shopify.com/s/files/1/0439/0528/6296/files/68405832040.pdf
- https://static.usrfiles.com/ugd/d55797_1d0b2f1a31c9489c8fd5dd752e4bda90.pdf
- https://static.usrfiles.com/ugd/db93e9_c73d0106e6574510b1fb19d929c7bd52.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_off000068ad.bin` `9578f7f6205ae7296649a3df56882880d74ba0df18f2a9e0d86b197b45d0403d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68AD	5420 bytes
`font_01_sfnt_off00007b1b.bin` `1e19050075ac5346766dba35c6172d195cbda410efe28dd98262e3e134e63b26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B1B	10508 bytes
`font_02_sfnt_off00009f10.bin` `4f6202450f482bcc4e515ac2271693f5b28015fae42dbbb8fbab376c8de1c706`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F10	5508 bytes

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