PDF malware analysis — malicious · 65b8446e48433a42

MALICIOUS

PDF

35.4 KB Created: 2020-09-18 08:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 00d5eb2a12ee953e93aa8cbea832ddda SHA-1: b1478164d2fafd130cf7b7902ab1b5ac00162d75 SHA-256: 65b8446e48433a4297aa45f71ee0b5616a7cb4dee42b63398a24cba7e11fe86b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, indicating a link farm or redirection scheme. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting an attempt to lead users to malicious content. The document body, though partially corrupted, contains keywords related to educational pacing guides, likely used as a lure.

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.link/wix?keyword=shelby+county+schools+pacing+guide+math
- http://titok.noahsacksteder.com/uploads/1/3/0/7/130738824/sujiro-sakelif-zavoza-fobut.pdf
- http://files.dissmathstutor.co.uk/uploads/1/3/0/7/130740065/dusijaxilaluxo-zibila.pdf
- http://kusanam.slipstreamnewmusic.com/uploads/1/3/0/9/130968961/0d9a6ed2ee.pdf
- http://files.carriecharleybrown.com/uploads/1/3/1/4/131407148/9913925.pdf
- http://sojuk.thefulfillmenthouse.com/uploads/1/3/1/0/131070493/bubavipifu.pdf
- http://zavulelop.mngophercockshutt.com/uploads/1/3/2/6/132681352/pigizasifo_novimesuxusoj_mazigusisegezos_xibexewijaso.pdf
- http://joketaso.vegansportsdad.com/uploads/1/3/1/0/131070301/mevedud-bimufupokabix.pdf
- http://files.scottkaplanphd.com/uploads/1/3/1/4/131483110/3705741.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://97914a57-62ea-4883-9f62-ddc62690d04e.filesusr.com/ugd/73f3b0_010bb6a5ae7d4729ab054b3d5fce82d5.pdf?index=true
- https://6b9ef3c2-2ade-4c96-b889-90dd5a742910.filesusr.com/ugd/9421c8_99ae4f1476df4ac286a073052183e4d6.pdf?index=true
- 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_off00004ba1.bin` `8a7537af4869310c977c7e697ef9e7a74cd8d46c4e888dee72b97d3dc95a662c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BA1	5736 bytes
`font_01_sfnt_off00005f08.bin` `b3e90f8c47aafa8f21debc5f0a1fcfc929d3debc78a18d9f5f7fccaa33ee2689`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F08	10004 bytes

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