PDF malware analysis — malicious · 68fde90245c735ad

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 11:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d2f34fc425d16bc9a4d8a320f94be73b SHA-1: 93449f6873d805fc92657afbb4fa73db9cfc6a45 SHA-256: 68fde90245c735ad1696baeacb062b269ab723bb9d51644cbb741565a66f4b6e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links, 'https://ttraff.cc/wix?keyword=dillon+1050+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to direct users to malicious infrastructure.

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=dillon+1050+manual
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0436/9245/8152/files/public_financial_management_book.pdf
- https://cdn.shopify.com/s/files/1/0434/3031/4133/files/xojudesukiromogunova.pdf
- https://cdn.shopify.com/s/files/1/0433/8899/3703/files/how_to_allow_discord_to_use_mic.pdf
- https://cdn.shopify.com/s/files/1/0465/1204/6230/files/photoshop_cc_2015_free_filehippo.pdf
- https://cdn.shopify.com/s/files/1/0431/5286/7477/files/bilekofef.pdf
- https://static.usrfiles.com/ugd/83d902_f4b35b46c06342fba1179a66cd0f2d0d.pdf
- https://static.usrfiles.com/ugd/b8c837_e3412b6fb3b5451aa6a36a134e74a7df.pdf
- https://static.usrfiles.com/ugd/06497e_7b121ebb627a48bbb429678d4112b7eb.pdf
- https://static.usrfiles.com/ugd/b11f6d_76d2080bc56d40218622e83c8ce3c0b6.pdf
- https://static.usrfiles.com/ugd/33a16d_41dc332b4407461491f347bce0e832c3.pdf
- https://static.usrfiles.com/ugd/aff7ca_56f9ffbfa88d4849849be197d1024641.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_off00005b42.bin` `b8c4d5c934115fc2cbe5e31bcb30a08297d514172288ae78bcccc459085858ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B42	4876 bytes
`font_01_sfnt_off00006bcd.bin` `28ae5108c1e0d9337f01abc092418e151f67b7c12db6112e88fa11d5643fb0e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BCD	10364 bytes

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