PDF malware analysis — malicious · 7d901835cbe7ff01

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 17:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c01132cea7ecb2a6b4295b43746c4e5 SHA-1: 4512a638b472c0718b7ee84d21b3c62c1449af3f SHA-256: 7d901835cbe7ff01e647456120e0cdc5ac11014b382adab1d0f463cbf75204c3

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service. The ML classifier strongly indicates maliciousness. The primary malicious URL identified is ttraff.com, which is likely used to host or redirect to further 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.com/wix?keyword=nylint+toy+parts
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_c10e294b03f64526aaefb5b05ea10abb.pdf
- https://static.usrfiles.com/ugd/6846fe_85d941f47bfc4b9bbf44ab1eb585415d.pdf
- https://static.usrfiles.com/ugd/8acad3_c2544fbccdf643549d1af399acb70b80.pdf
- https://cdn.shopify.com/s/files/1/0436/4356/8278/files/83993484968.pdf
- https://cdn.shopify.com/s/files/1/0434/8359/4917/files/tuxegikilawatimi.pdf
- https://cdn.shopify.com/s/files/1/0432/9301/6232/files/kemafibitipovatew.pdf
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/ctet_form_ke_liye_document.pdf
- https://cdn.shopify.com/s/files/1/0428/8885/5718/files/39517791486.pdf
- https://cdn.shopify.com/s/files/1/0429/0124/2015/files/38343467493.pdf
- https://cdn.shopify.com/s/files/1/0430/6799/8362/files/rulute.pdf
- https://cdn.shopify.com/s/files/1/0437/9826/6018/files/58464466111.pdf
- https://cdn.shopify.com/s/files/1/0433/5294/8901/files/mujeruzaf.pdf
- https://cdn.shopify.com/s/files/1/0435/2383/4011/files/african_traditional_religion_book.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_off00005e2e.bin` `19e25c293d28e3c3410d163e8654e825011cab39270a79c06eaad290c81a069e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E2E	4884 bytes
`font_01_sfnt_off00006edd.bin` `2473485d664446d6d564e941392b2edd6a1fbfa22082c6f01bae1dfd993ccc1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EDD	10016 bytes

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