PDF malware analysis — malicious · 0bd3d607044f324c

MALICIOUS

PDF

34.3 KB Created: 2020-08-29 14:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 460b519ce20387655199304776df824a SHA-1: e88a35fda2807a642254a32413424d1889370b6a SHA-256: 0bd3d607044f324cb395fe9672cc25509a284775f5d69685da464e270ab1bc28

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt, likely to obscure the true 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.ru/wix?keyword=77+victoria+street
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_4060db543b9e41568b1b0c44969a966b.pdf
- https://static.usrfiles.com/ugd/b8c837_eab1f5ba57d3473eb3ce059b61ccb77c.pdf
- https://static.usrfiles.com/ugd/b8c837_976e881af58d480eb561f86e1fcba9f4.pdf
- https://static.usrfiles.com/ugd/b8c837_ad9832d2efd24c09924b5cce1a436411.pdf
- https://static.usrfiles.com/ugd/b8c837_0abcaceee78f4e7dbff6621253b4b752.pdf
- https://static.usrfiles.com/ugd/b8c837_86d98b21fc1d43efb53e28b5f3749d7c.pdf
- https://static.usrfiles.com/ugd/b8c837_caba378897434a4e9a4c7be3dabc2fbf.pdf
- https://static.usrfiles.com/ugd/b8c837_9bec7f00dfa645c18488ffa75b96729d.pdf
- https://static.usrfiles.com/ugd/b8c837_39a44fc9681047a7a18a1bb62915b09d.pdf
- https://cdn.shopify.com/s/files/1/0433/6893/9672/files/95769012521.pdf
- https://cdn.shopify.com/s/files/1/0437/8171/8173/files/wufenowuziwabegono.pdf
- https://cdn.shopify.com/s/files/1/0430/3316/5986/files/noxenumufe.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_off000048a4.bin` `c2ce1399376b5c9876e8108ab4ee8db32821f8c4c6834fd4fc6b5f160d555a76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x48A4	4804 bytes
`font_01_sfnt_off00005903.bin` `9964c7edec95abd86b44dccdf01e46226a73717101e20c875e9091e9700d6419`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5903	10584 bytes

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