PDF malware analysis — malicious · 0fef777804a9362c

MALICIOUS

PDF

49.6 KB Created: 2020-08-15 03:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b0e7e536a71163bae29ca2e75ac1243f SHA-1: 7b73acb8f16cbf0e3896a5e8d1bf369cb35b05e9 SHA-256: 0fef777804a9362ce298a6fc91afbcc27e797c76f9205a66670fe9fcd96c4c56

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a salary bulletin, which is a common lure for phishing or malware. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the primary URL leads to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded content suggest an attempt to exploit user trust to redirect them to a malicious site.

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=bulletin+de+salaire+2018+pdf
- http://zirit.dorothyfreed.com/uploads/1/3/2/8/132814930/5736918.pdf
- http://files.nationalparks-list.com/uploads/1/3/1/6/131606069/7689536.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/2371/9845/files/dogadoromo.pdf
- https://cdn.shopify.com/s/files/1/0434/8418/4728/files/nisavidixavixonukakoxavis.pdf
- https://cdn.shopify.com/s/files/1/0437/6202/4605/files/84282788417.pdf
- https://cdn.shopify.com/s/files/1/0431/7780/3931/files/72945298837.pdf
- https://cdn.shopify.com/s/files/1/0439/1731/2152/files/veterinary_infectious_diseases_books.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27588499931.pdf
- https://cdn.shopify.com/s/files/1/0430/7373/2768/files/81413314681.pdf
- https://cdn.shopify.com/s/files/1/0433/3443/4969/files/voleb.pdf
- https://cdn.shopify.com/s/files/1/0431/5843/8039/files/1292888945.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_off000073de.bin` `057092657f8eccb36df741d792eb5399e161976bc22a4f81f2583fb4f676a436`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73DE	5604 bytes
`font_01_sfnt_off00008706.bin` `04f601161397a9dbc6b5c202e188ab64038a112db0027e9e5943de614ac2aa26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8706	16900 bytes

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