PDF malware analysis — malicious · 08beca824d117b7e

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 06:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e10f43f47ad284075d98bc2e7a48744e SHA-1: 33d806781a3c8d0d3bd0a63e8c647224b2ceaafc SHA-256: 08beca824d117b7e7034b78df20f28ba8c0b5055b194995f58e10bff3f5e51c3

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector to malicious infrastructure, indicating an attempt to lead users to harmful content. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or redirection scheme.

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/pify?keyword=ocp+java+se+8+study+guide+pdf
- http://lejuxoxu.frosttechlab.com/uploads/1/3/2/6/132681352/9194033.pdf
- http://files.thesurvivant.org/uploads/1/3/2/6/132695294/sobunisekupetusamuni.pdf
- http://files.firstbaptistwesterville.com/uploads/1/3/0/7/130739742/karodolo-ribipozinedal-zobop-maxodigu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14985018959.pdf
- https://cdn.shopify.com/s/files/1/0429/9541/7237/files/fuxesezujuloniki.pdf
- https://cdn.shopify.com/s/files/1/0429/2041/1289/files/goanimate_bring_back_lil_petz.pdf
- https://cdn.shopify.com/s/files/1/0431/8271/9136/files/37562058766.pdf
- https://cdn.shopify.com/s/files/1/0437/4655/8113/files/burok.pdf
- https://cdn.shopify.com/s/files/1/0449/7679/9903/files/poxefopigawevuj.pdf
- https://cdn.shopify.com/s/files/1/0432/8760/9497/files/78823753612.pdf
- https://cdn.shopify.com/s/files/1/0428/2292/6492/files/15084140664.pdf
- https://cdn.shopify.com/s/files/1/0431/9507/2674/files/black_eye_emoji.pdf
- https://cdn.shopify.com/s/files/1/0429/7211/9193/files/gesagonebeki.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_off000054bc.bin` `3d64742e1e6434f1054f0df3dd739d2a47c7f729d0df94aee95e02186aa8c831`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54BC	5652 bytes
`font_01_sfnt_off00006827.bin` `94f0f936d8b6fc5878122c1975bdf644c761f2485c18a558d182f8e818225ec1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6827	10648 bytes

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