PDF malware analysis — malicious · 7647c114b210e3aa

MALICIOUS

PDF

39.3 KB Created: 2020-08-23 11:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1e0328939ecd45240175848e4943b154 SHA-1: 131092a9e49b587c674e5fc99ed2f31092ea2106 SHA-256: 7647c114b210e3aa35a0b40e047522fb7f8ceced800494e74ecfac7c0616abf3

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 designed to lure users with a fake software download. The document body and heuristics indicate a phishing attempt disguised as a software download, likely to lead users to a malicious site. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent.

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.cc/pify?keyword=autocad+2015++filehippo
- http://temanawid.lazonbyvillagehall.co.uk/uploads/1/3/0/7/130775795/movivurugewudomuba.pdf
- http://files.brentfamilychiropractic.com/uploads/1/3/1/6/131606155/xemizatafupebis.pdf
- http://pijuvi.suntiments.com/uploads/1/3/1/6/131606183/munukotati.pdf
- http://files.amosociety.com/uploads/1/3/1/3/131384573/nolir.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/4649/3591/files/tenuvow.pdf
- https://cdn.shopify.com/s/files/1/0435/8720/7327/files/jimiwa.pdf
- https://cdn.shopify.com/s/files/1/0434/8510/2237/files/feripopitilidedemajad.pdf
- https://cdn.shopify.com/s/files/1/0431/3550/0439/files/jigiwum.pdf
- https://cdn.shopify.com/s/files/1/0432/5651/2667/files/perinexegavozoxak.pdf
- https://cdn.shopify.com/s/files/1/0431/0761/4882/files/58278044184.pdf
- https://cdn.shopify.com/s/files/1/0431/3848/2332/files/chunkzz_movie_hd_video_songs.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_off00005c7b.bin` `4b7d1d2cd5c4475a01c96ed60543c7c065b2078e00814e441768c5fae55c642e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C7B	5408 bytes
`font_01_sfnt_off00006edf.bin` `02e0ef5340eca72888ce69995c8ee1d41ab3e29a5f50358edf6625e061bec5bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EDF	9920 bytes

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