PDF malware analysis — malicious · 15e1654d58aa4b54

MALICIOUS

PDF

37.6 KB Created: 2020-09-04 14:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dc5a39af0fca7def326d9575f614df09 SHA-1: a23d74f6665f7ca33ea8ff1315c73989774812bc SHA-256: 15e1654d58aa4b54d6dfc2ec11e914e8edd001d9da441d549c0e4e3127bbed5a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Hermes scarf style guide'. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.me/wix?keyword=hermes+scarf+style+guide
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/9692/3543/files/marshmallow_recipe_gelatin_sheets.pdf
- https://cdn.shopify.com/s/files/1/0433/7264/2460/files/40118571303.pdf
- https://cdn.shopify.com/s/files/1/0432/2308/9307/files/xomavepimugiluxi.pdf
- https://cdn.shopify.com/s/files/1/0430/7520/7322/files/43659658240.pdf
- https://static.usrfiles.com/ugd/97368a_8765bdac77a64c95a7f650e7b0925075.pdf
- https://static.usrfiles.com/ugd/217d68_93aaca75d0a2453681f93bae16b665ca.pdf
- https://static.usrfiles.com/ugd/754d94_89d0f2be1069491090c9a16a6f1b666c.pdf
- https://static.usrfiles.com/ugd/b8c837_60117dac7607460884c8cc948294237b.pdf
- https://static.usrfiles.com/ugd/b8c837_b58bd7371b9e4bb192edae163889cf27.pdf
- https://static.usrfiles.com/ugd/a7074a_a785c4de816a4899bf2324f9711029a0.pdf
- https://static.usrfiles.com/ugd/a18aa6_43c9f92714524088843b785c065e9b30.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_off000053bc.bin` `5f53ea468164b45ef7d5c346de9708260102937574d3f8c45c8bcc759f9abc86`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53BC	5404 bytes
`font_01_sfnt_off0000660e.bin` `5826f2ca9b7c27134558fb64faf8e0b489060fa456bb4e426600d9cfa5c85126`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x660E	10664 bytes

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