PDF malware analysis — malicious · fe32bc03b67dd4ec

MALICIOUS

PDF

42.7 KB Created: 2020-08-31 03:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2c5aced9dc2a12c1f610e7c538853235 SHA-1: a32625c8870686603f24e51bae20c8b0a6a1bcfa SHA-256: fe32bc03b67dd4ecb9181cc643496f2c2ff380182fc9f464a98d95b656eb8eec

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an "ssis tutorial pdf". This indicates a phishing or social engineering attempt to direct the user to malicious infrastructure. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.com/wix?keyword=ssis+tutorial+pdf
- https://static.usrfiles.com/ugd/314c35_a45123bcface4c3e87001f7994ccd120.pdf
- https://static.usrfiles.com/ugd/b8c837_e9e377371a5b4457b6a196d957fd3a1a.pdf
- https://static.usrfiles.com/ugd/09c3c7_32f455f835174c159326aa0b1ada0a27.pdf
- https://static.usrfiles.com/ugd/73f3b0_ea7cc85e58cb4962bae76a6931b66843.pdf
- https://cdn.shopify.com/s/files/1/0438/1055/4016/files/o_que__forma_benevolente.pdf
- https://static.usrfiles.com/ugd/e73fea_be4911deaffd42f9aa76926c79bb696d.pdf
- https://static.usrfiles.com/ugd/a76634_0f4e1c3286e54b98b50a08def88883b3.pdf
- https://static.usrfiles.com/ugd/8dde66_165379e6b0c1461db3334effb649758c.pdf
- https://static.usrfiles.com/ugd/b444d4_f2afbe85de6c4609bcc05fa7c79df19c.pdf
- https://static.usrfiles.com/ugd/1be480_f0b7187b136f4ce2a7eb307b5d1af7a9.pdf
- https://static.usrfiles.com/ugd/89c6ad_abb1e37052514648942e7b4f2c1ee238.pdf
- https://static.usrfiles.com/ugd/8b2c09_ea830346dc8248739c7a961d8b4bff42.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_off00006456.bin` `8ed67a20d5d083254651c2bfe3a6e02043edf0f35f224dd61ac05a417a96fb64`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6456	5136 bytes
`font_01_sfnt_off000075d4.bin` `df4c34b94e076e4abb38f7e4fd5e5dbce283b82c0bd016dde90f2b3e039be2b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75D4	12312 bytes

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