PDF malware analysis — malicious · acb1adb3ca2e076e

MALICIOUS

PDF

38.2 KB Created: 2020-08-31 18:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 175be228a954837c99d86fe68c098973 SHA-1: 0cb8a6416e96178db5c1fe71f68eda6f6496089c SHA-256: acb1adb3ca2e076eed0d11631b3f9e6a0be43f27f9b61e65c2ad32c2305f81e4

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body text, though partially corrupted, includes keywords related to movie downloads, suggesting a lure to entice users to click the malicious link. 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.cc/wix?keyword=ayudha+poojai+full+movie++in+tamilrockers
- https://static.usrfiles.com/ugd/0df15e_ed50c1dd396c4dcfb54d9e0539c9d8f7.pdf
- https://static.usrfiles.com/ugd/b8c837_6d963c41c3254c718a19e9826dba365e.pdf
- https://static.usrfiles.com/ugd/95089d_33c1fe8b448641a4bbaf0de39188c15b.pdf
- https://cdn.shopify.com/s/files/1/0430/8477/5577/files/drive_the_surprising_truth_about_what_motivates_us_daniel_h._pink.pdf
- https://cdn.shopify.com/s/files/1/0430/1937/0659/files/agent_sai_srinivasa_athreya_movie_movierulz.pdf
- https://static.usrfiles.com/ugd/0a0016_449d3f6184844ae09ed68dcbd7bb21dd.pdf
- https://static.usrfiles.com/ugd/856cea_6d489cd669204e81a5ab4a82ecd53b85.pdf
- https://static.usrfiles.com/ugd/b8c837_0a0445fbf03441d0a8e13c78aaf8a6cc.pdf
- https://static.usrfiles.com/ugd/52b593_6a4cca08f49a4362b6e7261cc1651c03.pdf
- https://static.usrfiles.com/ugd/b8c837_eb243ba64c664cde867e4be476f46504.pdf
- https://static.usrfiles.com/ugd/bfbc46_5f8b638ab5d845329bd1afb09d1642bd.pdf
- https://static.usrfiles.com/ugd/e73fea_c0bdd1fb332147c79d853472be1fbbbc.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_off000056e6.bin` `7148d3225bd3a03d0d2344407723c52537ea593f75a479d8a36fee6d57820336`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56E6	5688 bytes
`font_01_sfnt_off00006a26.bin` `dcfbaed1832732f1be47d71888ca8568fd4c36b448f2a3492561148262464851`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A26	10152 bytes

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