PDF malware analysis — malicious · d200c09d19a399ce

MALICIOUS

PDF

54.4 KB Created: 2020-08-31 12:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 34ddb46d37d43f1de2c50c291c5fed81 SHA-1: 246dbdb9acaa3f71c5235cd562ac570f3657d29b SHA-256: d200c09d19a399cec04b02e352041db41c9befd302a178a396f4c6cc8576f8e0

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. It also exhibits characteristics of an SEO link farm, with numerous embedded links to external PDF files. The document body appears to be corrupted or heavily obfuscated, but the presence of the URL 'https://ttraff.com/wix?keyword=angular+2+form+wizard+example' suggests a potential lure or redirection mechanism.

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=angular+2+form+wizard+example
- https://static.usrfiles.com/ugd/b8c837_77c975ca356f4feab207798eb7a5a9c0.pdf
- https://static.usrfiles.com/ugd/b8c837_83deba17ba46488e8e481a847c049795.pdf
- https://static.usrfiles.com/ugd/b8c837_a0c9fc0cac2149649eced41ed819b38c.pdf
- https://static.usrfiles.com/ugd/9904c2_9695a2f9f3e54e998a2d9e22fe27a78f.pdf
- https://static.usrfiles.com/ugd/b88e3d_1576e61741354589b74deafff44551da.pdf
- https://cdn.shopify.com/s/files/1/0431/2032/8853/files/fixigugonumivubezapibox.pdf
- https://cdn.shopify.com/s/files/1/0459/8271/1970/files/7637161271.pdf
- https://cdn.shopify.com/s/files/1/0430/6688/4250/files/97323471111.pdf
- https://cdn.shopify.com/s/files/1/0453/8921/7960/files/cartoon_movies_for_babies_free.pdf
- https://cdn.shopify.com/s/files/1/0431/4795/2292/files/94065337511.pdf
- https://static.usrfiles.com/ugd/b8c837_18943925f7ce472cb0a887f608415b46.pdf
- https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.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_off00008330.bin` `8be8182b1d6a3e839be0b7113760506f42d6714973a19c113736e98b318d393c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8330	5516 bytes
`font_01_sfnt_off000095fd.bin` `9f952727906c8f61b57713882a3b3afeb7131d9714ea729b082199d91ef1717a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95FD	16928 bytes

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