PDF malware analysis — malicious · 6145cd3f54cb8dc5

MALICIOUS

PDF

63.0 KB Created: 2020-09-02 00:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ff008a2ef63e82b535b7dd40be876477 SHA-1: 166df065b9e6dff84bed66919408e5e5a9cb732c SHA-256: 6145cd3f54cb8dc5261679eb3e3a0968b437b143cc374ce78b4939e93b2046f9

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a link disguised as a 'certificate of conformity' that redirects to a malicious URL. This suggests a phishing or social engineering attack aimed at tricking the user into visiting a harmful site. The presence of a large number of external links, many of which are benign, indicates a link farm used to obscure the malicious destination.

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.club/wix?keyword=certificate+of+conformity+to+the+european+standards
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/7f16bd_70eac5f651654654b02ccf18b8e26e3b.pdf
- https://static.usrfiles.com/ugd/2b25e8_c867478a0cc04c089a7915deb027be4d.pdf
- https://static.usrfiles.com/ugd/b8c837_c0d43d1519814115b32301c81109aad9.pdf
- https://static.usrfiles.com/ugd/529dbf_5b255c097c354cceba6f8bf7b81fe4fb.pdf
- https://static.usrfiles.com/ugd/b8c837_4d54ad11e8584cbdb733ad4d6aea8d5c.pdf
- https://static.usrfiles.com/ugd/430cb2_40700cef7aad4093809a4c8be7a683e0.pdf
- https://static.usrfiles.com/ugd/b8c837_a35acb43825e4af491cb5111335df0e8.pdf
- https://static.usrfiles.com/ugd/b8c837_5281e1bfd0ea43fa8091cbaade2a9dbc.pdf
- https://static.usrfiles.com/ugd/374ce0_221710d6e994425ab0214acc96fd3dd6.pdf
- https://cdn.shopify.com/s/files/1/0433/1952/5531/files/como_convert_en_autocad_gratis.pdf
- https://cdn.shopify.com/s/files/1/0431/3884/2779/files/xugin.pdf
- https://cdn.shopify.com/s/files/1/0435/8812/4830/files/fobujedupetalupuwexiruru.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_off0000b835.bin` `6f117c3b3b491a0c55c0ff7e689d9eda3d8aba52f90451e8f37e78d98db73f7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB835	5368 bytes
`font_01_sfnt_off0000ca57.bin` `13262443091efa68a32083663d254a720a09f784d21de087ae73098ac0c5582e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA57	10608 bytes

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