PDF malware analysis — malicious · 5d39ae3dae90e423

MALICIOUS

PDF

43.2 KB Created: 2020-09-01 22:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e20cfae8f8cac625a5fd3986f8ede4fa SHA-1: 5223ce4927f01f0cf7446b0ed45b02599137e9a8 SHA-256: 5d39ae3dae90e4231ad76fa08c0a2efa2e6c203fdad3fd64c562d58d2e290b02

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though partially obfuscated, contains text related to a 'career objective' and the malicious URL, suggesting a phishing or social engineering lure. The presence of numerous embedded links, many pointing to Shopify, indicates a link farm strategy, likely to obscure the ultimate malicious destination.

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=career+objective+for+manual+tester
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/2155/7150/files/82974834275.pdf
- https://cdn.shopify.com/s/files/1/0431/1787/1266/files/31749657474.pdf
- https://cdn.shopify.com/s/files/1/0432/6205/0468/files/maberepipamefoxa.pdf
- https://cdn.shopify.com/s/files/1/0431/6486/0580/files/converting_to_word_doc_for_free.pdf
- https://static.usrfiles.com/ugd/b8c837_8c1f3fb7df974c00b7f3a8f0f9b5b514.pdf
- https://static.usrfiles.com/ugd/9dda13_fb711b9f2245476688614cf62583f3d6.pdf
- https://static.usrfiles.com/ugd/d4579c_d6eb8bccec3149469da5cb4a560b07c1.pdf
- https://cdn.shopify.com/s/files/1/0434/3506/5505/files/fotefidi.pdf
- https://cdn.shopify.com/s/files/1/0432/7004/5864/files/18108191782.pdf
- https://static.usrfiles.com/ugd/b8c837_87f33e0bafed4d5fab536b8245b00c96.pdf
- https://static.usrfiles.com/ugd/6203b9_b5845958b1ef47fcbef9536c94ef12dd.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_off00006b12.bin` `08a01370e865b8d5d3ce23b33ec0051fef64af4df60bb0c702d1feb2ec7d4cd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B12	5208 bytes
`font_01_sfnt_off00007cbd.bin` `08bd657260371c7a4cfb65417bb82e061b154fe41133c1405799737988aa2f6d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CBD	10408 bytes

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