PDF malware analysis — malicious · 3269514a547e93bc

MALICIOUS

PDF

31.0 KB Created: 2020-08-23 05:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f6f214147afad780f84ecb7abe0c2f7a SHA-1: e6c4b40ba6d379ec0f7281e35c895fba4ba9ff46 SHA-256: 3269514a547e93bc33e997d61b364d63bc4c279a9dd01e2261449acf656dcd32

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, also contains the URL 'https://ttraff.cc/pify?keyword=square+bunting+template+printable', which is likely used to obscure the final destination of the malicious payload. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm designed to distribute malicious content.

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/pify?keyword=square+bunting+template+printable
- http://files.americascoresseattle.org/uploads/1/3/0/8/130873851/6321784.pdf
- https://cdn.shopify.com/s/files/1/0432/1037/5325/files/rajemedobusifobafijabasu.pdf
- https://cdn.shopify.com/s/files/1/0437/7424/7069/files/316730690.pdf
- https://cdn.shopify.com/s/files/1/0433/6150/1349/files/99877883571.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
- https://cdn.shopify.com/s/files/1/0434/3264/0664/files/xawusak.pdf
- https://cdn.shopify.com/s/files/1/0438/3136/1686/files/paradise_lost_book_12.pdf
- https://cdn.shopify.com/s/files/1/0431/7813/1611/files/12563790648.pdf
- https://cdn.shopify.com/s/files/1/0431/5283/4711/files/62772319316.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdf
- https://cdn.shopify.com/s/files/1/0433/1575/7214/files/15243855871.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_off00003e69.bin` `7701ea45910797ed3bd2ff98ff7731ea83f0ff3e0dc8524dba5c700b9d5caf37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3E69	5332 bytes
`font_01_sfnt_off0000506b.bin` `2dc732c76c5886c0dc3e8ee5ce82f6756366aed170b1d1584bcf12e09f56612e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x506B	9124 bytes

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