PDF malware analysis — malicious · 73383ab5eb97088e

MALICIOUS

PDF

36.0 KB Created: 2020-09-02 03:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 75adc1a414ecd91d811df3811114e6c4 SHA-1: c440cbf24a86eeb03468be0a0dab9c33ca81e580 SHA-256: 73383ab5eb97088e9bfcde5b7118ee96cefabc3e71f21e36a584fa49cc893afa

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, one of which, 'https://ttraff.ru/pify?keyword=video+show+hack+apk', is flagged as a malicious redirector. The document body also contains this URL and a lure related to a "Video show hack apk", suggesting a phishing or scam attempt. The presence of numerous other Shopify links indicates a potential link farm used to obscure the malicious destination. No scripts were extracted, but the overall structure and the malicious URL point towards a phishing attack.

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/pify?keyword=video+show+hack+apk
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/1324/2014/files/simple_definition_of_electricity.pdf
- https://cdn.shopify.com/s/files/1/0429/8250/6647/files/kilopa.pdf
- https://cdn.shopify.com/s/files/1/0428/9891/5484/files/endospore_formation_bacteria.pdf
- https://cdn.shopify.com/s/files/1/0431/7554/2950/files/exercises_for_peroneal_tendonitis.pdf
- https://static.usrfiles.com/ugd/b8c837_1d08ac3d725a4921b691155fbd84b27f.pdf
- https://cdn.shopify.com/s/files/1/0431/6656/4520/files/bevadimasomegotazak.pdf
- https://cdn.shopify.com/s/files/1/0430/3018/4098/files/44806012874.pdf
- https://cdn.shopify.com/s/files/1/0435/9494/0573/files/63646636290.pdf
- https://static.usrfiles.com/ugd/45e30f_ac28b4f7051d4e2c84fd90a49e562bd8.pdf
- https://static.usrfiles.com/ugd/4e6dd5_e18c1d51356a4997b778c16d7ad62a54.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005010.bin` `9c30722649a54a9d637203cda57cc5383a7befe544c08eca63c09c3f92623843`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5010	5156 bytes
`font_01_sfnt_off000061ae.bin` `3ff419ed4bff2f4f9dd2e5a9fe6e0f460d8de8d7c833b9e8c07c40c0326a6e29`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61AE	10016 bytes

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