PDF malware analysis — malicious · 1882cc3559b2a30e

MALICIOUS

PDF

81.4 KB Created: 2020-09-04 08:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e0915f3de3095e06e2f8933cfcdbf0b6 SHA-1: c8a37f4c07ba6ab6f7c2b9423ad686767b40f10c SHA-256: 1882cc3559b2a30e9390c115b538f5c890c37d358d8142e50383cbaf33ddc095

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains the text 'Ethnography as a form of research' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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=ethnography+as+a+form+of+research
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0438/2926/4546/files/jakuvujajujuxagirawen.pdf
- https://cdn.shopify.com/s/files/1/0428/2325/4183/files/buragotuwijajid.pdf
- https://cdn.shopify.com/s/files/1/0427/5470/3526/files/varena.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
- https://static.usrfiles.com/ugd/405339_df60336eabca45cb897f9b7b544010c5.pdf
- https://static.usrfiles.com/ugd/565485_d7f384c950f54b3f844746b755535843.pdf
- https://static.usrfiles.com/ugd/911c12_6cae3a72feb04f18a2bdfeccc3cd869d.pdf
- https://static.usrfiles.com/ugd/b8c837_5301244c4e7549daa7a7fa3d94381bef.pdf
- https://static.usrfiles.com/ugd/8e6e76_c909b7efde5a4d00a14c76c0940c260b.pdf
- https://static.usrfiles.com/ugd/7c30af_2532ea5869284df186247b55d2c0c0fc.pdf
- https://static.usrfiles.com/ugd/8f6098_5ca76a9d004346bf809010857e5c550c.pdf
- https://static.usrfiles.com/ugd/b8c837_70a1ffe7f8bc4e2f9c2a1297548aa03e.pdf
- https://static.usrfiles.com/ugd/38bf1f_5702c748b2f24b588cdb5f4c820e5d4d.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_off0000fd26.bin` `52a5a8df7dc7470472f5b59071653c01b34849c7edcfb4f187bab8f426d8c058`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD26	5456 bytes
`font_01_sfnt_off00010fa2.bin` `247ce165e6ccc2259ceb5f07390dd30fb1191a7f5ffd3ade697f86354d9c1b66`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10FA2	12404 bytes

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