PDF malware analysis — malicious · 16addedd03471f31

MALICIOUS

PDF

39.9 KB Created: 2020-09-03 01:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cc97181ba1578a887c08170c83428ba4 SHA-1: f85a12587d88f57b55654e2db48a20b3421c683e SHA-256: 16addedd03471f310d7d2307c6fa8a37d44b5b9a58d71922dd70c919f522a397

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF contains a link farm designed to direct users to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/wix?keyword=barton+high+performance+garnet+abrasives+sds. The document's structure and embedded links suggest an attempt to leverage SEO techniques for malicious redirection, likely as part of a phishing or scam campaign.

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.ru/wix?keyword=barton+high+performance+garnet+abrasives+sds
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0438/4745/0789/files/65301533177.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6509/files/baarishein_anuv_jain_mr_jatt.pdf
- https://cdn.shopify.com/s/files/1/0428/5225/3863/files/sewete.pdf
- https://static.usrfiles.com/ugd/1849a1_26d99b30f3d84a4791ca52bda0d934b0.pdf
- https://static.usrfiles.com/ugd/e66789_34f07e312da44006a15e6cc7446c947d.pdf
- https://static.usrfiles.com/ugd/a42eed_7f69eccb20b141178235f7dda3fa504d.pdf
- https://cdn.shopify.com/s/files/1/0431/4306/9845/files/82648144561.pdf
- https://cdn.shopify.com/s/files/1/0437/9040/1687/files/purunetazomukemovirunaviw.pdf
- https://cdn.shopify.com/s/files/1/0429/5180/3039/files/plc_fault_finding_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mazasalekisupivujimesuzap.pdf
- https://cdn.shopify.com/s/files/1/0428/0310/1863/files/23593116700.pdf
- https://cdn.shopify.com/s/files/1/0434/6452/3926/files/68738014204.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_off000059b2.bin` `83488b94e5349c17e8b38388985daeeb6c4a3eb586a1d2f36b6db4c18a2889f5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59B2	5788 bytes
`font_01_sfnt_off00006d48.bin` `792d1cbb7d0bfe6121a335ba3a919d0f3aec9d24c284ba36a3c40d372ae4e229`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D48	10544 bytes

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