PDF malware analysis — malicious · 65d29dbc8480a1d9

MALICIOUS

PDF

38.1 KB Created: 2020-08-30 01:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3df8f7b2294bf74ba37fd2e97353710a SHA-1: b975c5f4b97496278948b2528d7dd5fed65e56b1 SHA-256: 65d29dbc8480a1d901e2c1310cb402c268f0f1d8e83448985757c83234e39fc0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=avanquest+message+c%2527est+quoi'. This URL is likely part of a phishing or malware distribution chain. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign PDF files, but the primary redirector is highly suspicious. No scripts were extracted, but the presence of embedded links suggests an attempt to direct the user to malicious content.

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=avanquest+message+c%2527est+quoi
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/48d9a1_484f9cb984cf478eb42039fa29a0440e.pdf
- https://static.usrfiles.com/ugd/b8c837_d307585f8fdc43e7ab79e7c39acc6d58.pdf
- https://static.usrfiles.com/ugd/b8c837_b798244337974331a7ca0fb43a6ad61f.pdf
- https://static.usrfiles.com/ugd/b8c837_daf4ec05f5bf402faf6d38e30f2777ea.pdf
- https://cdn.shopify.com/s/files/1/0438/1717/3149/files/jubaxidedalugavoro.pdf
- https://cdn.shopify.com/s/files/1/0429/8499/7025/files/aditya_birla_mutual_fund_android_app.pdf
- https://cdn.shopify.com/s/files/1/0434/8837/9032/files/24006867234.pdf
- https://static.usrfiles.com/ugd/b65acf_8afe435151334ddc85711654417ac01d.pdf
- https://static.usrfiles.com/ugd/b8c837_a41ee739c4c04b99ab9cfd73163e7638.pdf
- https://static.usrfiles.com/ugd/d2751c_803f9bf6e110445c999b1aab8ce551db.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_off0000568a.bin` `3ac9ae817f2884d0c9ad8066f22c0dc57db68e1e64e034994015dff5873f225a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x568A	5200 bytes
`font_01_sfnt_off00006836.bin` `ac47e39771717baff26e4e25327e45eec04006f9b83feeb079138ed5afee12e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6836	10480 bytes

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