PDF malware analysis — malicious · ad257ba83fa9a977

MALICIOUS

PDF

47.5 KB Created: 2020-08-23 08:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b316230bfacad841416358f4e7a99c4f SHA-1: 7a458c24793b0cb2661fde60f6db42caf3eb5b20 SHA-256: ad257ba83fa9a97759485757026f19c27d2cdb23b0d00f98e12e7634750a3600

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL 'https://ttraff.com/pify?keyword=tripartite+guidelines+on+non-+discriminatory+job+advertisements' as pointing to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or distribution network. The ML_NYX_PDF_MALICIOUS classifier also strongly indicates malicious intent. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=tripartite+guidelines+on+non-+discriminatory+job+advertisements
- http://files.poehaku.com/uploads/1/3/1/6/131607239/ab7f23f.pdf
- http://files.paulsumich.co.nz/uploads/1/3/1/3/131398547/tufegujak.pdf
- http://files.359yoga.com/uploads/1/3/0/8/130874067/a80e8aa868e1.pdf
- http://files.brandonarthurshindolcsw.com/uploads/1/3/0/8/130814124/pamadodekozomizo.pdf
- https://cdn.shopify.com/s/files/1/0430/7812/3669/files/50423115125.pdf
- https://cdn.shopify.com/s/files/1/0431/9785/7954/files/repijiganudelineraz.pdf
- https://cdn.shopify.com/s/files/1/0431/5611/1520/files/figixo.pdf
- https://cdn.shopify.com/s/files/1/0437/8741/9805/files/40446878200.pdf
- https://cdn.shopify.com/s/files/1/0429/6772/8279/files/52306617957.pdf
- https://cdn.shopify.com/s/files/1/0433/2011/5358/files/29819118254.pdf
- https://cdn.shopify.com/s/files/1/0431/0152/0023/files/list_of_useful_adjectives.pdf
- https://cdn.shopify.com/s/files/1/0448/5762/2689/files/php_show_latest_image_in_dir.pdf
- https://cdn.shopify.com/s/files/1/0437/7962/1026/files/bft_gates_manual.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8099/files/90815351766.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/
- https://cdn.shopify.com/s/files/1/0431/0152/0023/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006d6c.bin` `2257209a7b6025a2f0083670c8e0d7974d363f432c5172f6b7b0dfee937e31d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D6C	3604 bytes
`font_01_sfnt_off00007a48.bin` `d5b03ff9a61e90061193b9a666833d6ba063dd68ac02504ad4d725de414a25cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A48	5752 bytes
`font_02_sfnt_off00008dcb.bin` `f508e1e6fcd3facaa5ef33da6ed1025ca13d60ed3ca0fca4c4be8181d0798a2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DCB	9956 bytes

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