PDF malware analysis — malicious · 2d81893b8585c095

MALICIOUS

PDF

42.1 KB Created: 2020-09-02 00:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0912ad4aea6b09380f2eb2fa3703152e SHA-1: ae9d15fba78899f218958feb0d0025eb2e5cbfc5 SHA-256: 2d81893b8585c095021244111af767f52aa70995ef1674f6eab462e0ab0fc1a6

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a song title and references the PDF creation tool. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL is a high-confidence indicator of a phishing or redirection 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.cc/wix?keyword=bismillah+karan+song++mp4
- https://static.usrfiles.com/ugd/a48928_c1690abf261045528fee066a75418d61.pdf
- https://static.usrfiles.com/ugd/5ecadc_afa9f44ac88f4a2cbaedc1e3e1258868.pdf
- https://static.usrfiles.com/ugd/40336e_6a7f55e5ec6e4cffbdfff13d0e47eda8.pdf
- https://cdn.shopify.com/s/files/1/0430/7959/8229/files/adobe_photoshop_trial.pdf
- https://cdn.shopify.com/s/files/1/0430/2969/2577/files/95815569900.pdf
- https://cdn.shopify.com/s/files/1/0429/1143/2857/files/38093122859.pdf
- https://cdn.shopify.com/s/files/1/0432/3062/5950/files/bimezoxe.pdf
- https://cdn.shopify.com/s/files/1/0428/4389/8019/files/44842528063.pdf
- https://cdn.shopify.com/s/files/1/0434/9535/8624/files/10555623129.pdf
- https://static.usrfiles.com/ugd/dad90e_b35c0b6dffe94948b362fb8762420458.pdf
- https://static.usrfiles.com/ugd/3b0c81_eba9792e29624adb92f97bea9a786521.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_off00004ebb.bin` `7dd5ee71a417ea12104a366f2d67eaf3a463f60f4361bb5271787cb75962c887`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EBB	5436 bytes
`font_01_sfnt_off00006112.bin` `8d384e0d52c09f639f954ea6652b854e9913857df87c369b081b3cfd34f7644c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6112	13500 bytes
`font_02_sfnt_off00008bf4.bin` `b53e2de5e0652efe117f6c511876ec2b996c0c4570e5780062b2d31cdf61f7d1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BF4	3724 bytes

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