PDF malware analysis — malicious · 07ec833263e6fe53

MALICIOUS

PDF

39.4 KB Created: 2020-08-15 05:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8bea4f31ab63967760e0e2712936d563 SHA-1: cf043814ede93b5c707df092d4c5a04a4fd43f07 SHA-256: 07ec833263e6fe53c3dfd2f0201fa02355cee5e11c2661333a728168b2722a4b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a redirector. The document body, though obfuscated, contains text referencing an 'Ofsted report' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of numerous external PDF links further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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/pify?keyword=the+norton+knatchbull+school+ofsted+report
- http://mogig.idaspence.org/uploads/1/3/1/4/131453624/f78df9df96.pdf
- http://files.heyblueyes.com/uploads/1/3/0/8/130813639/liritexuj.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/9808/7328/files/50716859295.pdf
- https://cdn.shopify.com/s/files/1/0440/7338/6136/files/12897605935.pdf
- https://cdn.shopify.com/s/files/1/0433/4642/8059/files/wibijuvuxotaboni.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/josuzafegeda.pdf
- https://cdn.shopify.com/s/files/1/0434/1386/4604/files/dixas.pdf
- https://cdn.shopify.com/s/files/1/0436/8115/3177/files/bileik_formlleri_8._snf.pdf
- https://cdn.shopify.com/s/files/1/0433/9197/5580/files/53745415576.pdf
- https://cdn.shopify.com/s/files/1/0435/2180/2404/files/bapisajabafomozonagup.pdf
- https://cdn.shopify.com/s/files/1/0430/1471/7597/files/togofas.pdf
- https://cdn.shopify.com/s/files/1/0435/6128/7839/files/kapupivodikune.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_off00005aee.bin` `571b5ad6308194c87563e06de17ce690b8fe062eb8413f78ac1c19783ca25756`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AEE	5396 bytes
`font_01_sfnt_off00006d30.bin` `d256c4b2ac5085fe9fbdd0bbe410ab382cbfe2e427829f43e1cbf48ba99e1168`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D30	10692 bytes

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