PDF malware analysis — malicious · d3fa5c58c9f8bc9c

MALICIOUS

PDF

60.1 KB Created: 2020-08-05 10:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 62321af8dd6760ff0f9255c3eee6ab4e SHA-1: 21a5c23fa9c200ab13afa9658b6a8d0a3f869e4b SHA-256: d3fa5c58c9f8bc9cfcb2ac06481392024fce99df3da52a13542ae150e4e0b04f

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=fundamentals+of+ms+excel+pdf'. This indicates a phishing or social engineering attempt to direct users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files, likely for SEO manipulation to improve search engine ranking for malicious content. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

Heuristics 3

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.
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/pify?keyword=fundamentals+of+ms+excel+pdf
- http://files.mnnicebaseball.com/uploads/1/3/0/8/130874458/xamezut.pdf
- http://files.icanbirth.com/uploads/1/3/0/9/130969313/zutazutapazi.pdf
- http://files.theoverflowingbookshelf.com/uploads/1/3/1/6/131606758/kivubifiguvibisufov.pdf
- https://cdn.shopify.com/s/files/1/0430/2916/8282/files/judadogisowe.pdf
- https://cdn.shopify.com/s/files/1/0437/5887/8872/files/52179779228.pdf
- https://cdn.shopify.com/s/files/1/0433/0346/9221/files/80519937332.pdf
- https://cdn.shopify.com/s/files/1/0431/5283/4711/files/zozalalon.pdf
- https://cdn.shopify.com/s/files/1/0434/9722/6402/files/zevide.pdf
- https://cdn.shopify.com/s/files/1/0434/3028/1381/files/kagesofunopodog.pdf
- https://cdn.shopify.com/s/files/1/0433/5756/9176/files/tedokuwep.pdf
- https://cdn.shopify.com/s/files/1/0428/6437/8022/files/realtek_network_drivers.pdf
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/88326146153.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevadijuxirefasu.pdf
- https://cdn.shopify.com/s/files/1/0434/1648/6040/files/72800356654.pdf
- https://cdn.shopify.com/s/files/1/0431/8566/8255/files/vuxugavopezofelejofulosa.pdf
- https://cdn.shopify.com/s/files/1/0437/1005/4554/files/59984725636.pdf
- https://cdn.shopify.com/s/files/1/0437/9725/0210/files/55337848959.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_off0000aeb5.bin` `49da0f4cb6a9610fd624c850511906c5bb0999dd14ce9a6d99283a467b62ff4e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAEB5	5228 bytes
`font_01_sfnt_off0000c07c.bin` `c5c8cfc2050eaff09f61440ab45709525870e811770712bab9fce0c0aa990e03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC07C	10196 bytes

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