PDF malware analysis — malicious · 372e62b1f34529ae

MALICIOUS

PDF

50.2 KB Created: 2020-09-01 22:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 15a6beb66601218225fe84efdc6ab349 SHA-1: 29171b0a24553e5bd0026b3d46e69dec2cca3f4b SHA-256: 372e62b1f34529aeb75080c147afa0681f26bef872f55e87f87d4f51515172a1

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.link/wix?keyword=operational+feasibility+report+definition'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting a phishing or malware delivery attempt.

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.link/wix?keyword=operational+feasibility+report+definition
- https://cdn.shopify.com/s/files/1/0435/0358/3384/files/87132875020.pdf
- https://cdn.shopify.com/s/files/1/0431/3710/6087/files/75794448127.pdf
- https://cdn.shopify.com/s/files/1/0428/2338/5247/files/julutason.pdf
- https://cdn.shopify.com/s/files/1/0438/2018/7805/files/givaworinopapu.pdf
- https://cdn.shopify.com/s/files/1/0432/2990/5058/files/the_new_encyclopedia_of_modern_bodybuilding_free.pdf
- https://cdn.shopify.com/s/files/1/0440/2633/1286/files/bad_genius_eng_subtitle_srt.pdf
- https://static.usrfiles.com/ugd/fbccce_154848267ed74016935c75b146f723ed.pdf
- https://static.usrfiles.com/ugd/6c032c_7d3d7e912ad5412285964dc1313e21f1.pdf
- https://static.usrfiles.com/ugd/b8c837_244c20871d254709ae39f38d64059956.pdf
- https://static.usrfiles.com/ugd/a58b01_4999ecf560a547209c9e1f327001e206.pdf
- https://cdn.shopify.com/s/files/1/0427/6640/1692/files/90697803685.pdf
- https://cdn.shopify.com/s/files/1/0430/1671/6437/files/70064013359.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_off00008601.bin` `ab566c118dd86ec897b435cc71e532bd95694d0168a98cb47c7a280c7b202c7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8601	5304 bytes
`font_01_sfnt_off00009817.bin` `f35ab5a274165be9ae3bc1c10515ddf0bd3ccd8ddb6ad57a7d7fd32f04b12d8f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9817	10428 bytes

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