PDF malware analysis — malicious · 40ecf2bed3241257

MALICIOUS

PDF

33.0 KB Created: 2020-08-30 08:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 14efa48363e52d2017245cb4dab9dbf9 SHA-1: 3c6975b74243bb07261f939ee41874101210f13a SHA-256: 40ecf2bed3241257a47d9de02db8d2fa7453fe7d9f75d951d9644dde2de076db

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to manipulate search engine results, directing users to a malicious redirector. The primary malicious URL identified is https://ttraff.com/wix?keyword=janome+magnolia+7318+sewing+machine+manual. The document body, though heavily obfuscated, contains references to a sewing machine manual, likely a lure to disguise the malicious intent. 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.com/wix?keyword=janome+magnolia+7318+sewing+machine+manual
- https://static.usrfiles.com/ugd/89363e_bb3507c4e46b414bb3a9dff905f88654.pdf
- https://static.usrfiles.com/ugd/b8c837_228b64af559e4de8a537ffcc6ff3f89d.pdf
- https://static.usrfiles.com/ugd/a31856_966a079f48e4492f973e52615fb51e02.pdf
- https://static.usrfiles.com/ugd/b52961_b19a7f9c80d5470faea149caf3886884.pdf
- https://cdn.shopify.com/s/files/1/0432/3642/5883/files/27641333296.pdf
- https://cdn.shopify.com/s/files/1/0461/7705/8979/files/faxariputamufa.pdf
- https://cdn.shopify.com/s/files/1/0432/5382/5694/files/what_is_walmart_s_mission_statement.pdf
- https://static.usrfiles.com/ugd/b8c837_a49289018dd84a7f88afcfbded0bdc9e.pdf
- https://static.usrfiles.com/ugd/b8c837_6da74e8f44b24e0db7789090bd81443f.pdf
- https://static.usrfiles.com/ugd/d9d1f5_793b0e9e65be492ebc382bba56e1f0b4.pdf
- https://static.usrfiles.com/ugd/b8c837_0a694811ad564bd38b965194c57d12a1.pdf
- https://static.usrfiles.com/ugd/7598fa_5111f1886d5c47aa9cc730df1a2b9bce.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004221.bin` `f7eda4dbcb6d8d80110b0a6642fd1814151ee29a9077688df5fa120dddd8da2e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4221	5688 bytes
`font_01_sfnt_off00005576.bin` `5ee9b3b482cbe03631d992088674b4084a0e790d13780476687adc919be64120`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5576	9972 bytes

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