PDF malware analysis — malicious · 6a78b8b8e612eff0

MALICIOUS

PDF

37.4 KB Created: 2020-08-30 02:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e33df969b92055b38817b0cc90ab1188 SHA-1: 739bddac20f180031150ae26198885238cf0f74f SHA-256: 6a78b8b8e612eff0a0a9645a8e0b7a21bef731eb7ad25c4c34ddf6b11c7b59bb

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits malicious behavior by hosting a link farm, with a primary URL pointing to known malicious redirector infrastructure. The document's content, though obfuscated, includes URLs that are part of this link farm, suggesting an attempt to lure users to malicious sites. The ML classifier strongly supports the malicious verdict.

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=o+holy+night+sheet+music+soprano+solo
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_67c5535f64cc4a94b305c7f231320b18.pdf
- https://static.usrfiles.com/ugd/b8c837_9800b51d04f245bdb5d3dc1c43cfac2a.pdf
- https://static.usrfiles.com/ugd/b8c837_b541c3dd58224a26a8f053fce03d572c.pdf
- https://static.usrfiles.com/ugd/bf650e_5eff955be2c94fadbcd0dda3f3a80453.pdf
- https://static.usrfiles.com/ugd/b8c837_189295f9b67f465890b07b2c896eb7bb.pdf
- https://static.usrfiles.com/ugd/b8c837_c4cda6bd2d794ff4a1f776d213aa55d9.pdf
- https://static.usrfiles.com/ugd/40512e_05a1f50953eb4f6989d0324486c94524.pdf
- https://static.usrfiles.com/ugd/b8c837_7126a32b991b40a094026de72dcea7e8.pdf
- https://static.usrfiles.com/ugd/51c472_25ae02d5f139494a939b0952ca6d380a.pdf
- https://cdn.shopify.com/s/files/1/0466/3033/8725/files/gezewagunapi.pdf
- https://cdn.shopify.com/s/files/1/0437/6779/1765/files/crawmerax_solo_guide.pdf
- https://cdn.shopify.com/s/files/1/0436/4589/4816/files/babebajiwaxejowi.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_off0000531c.bin` `f6b900a441941da1c60c6b8a94027f4d419154317d5da163e26614dee5b8b3bf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x531C	5476 bytes
`font_01_sfnt_off0000659a.bin` `9334a15e3d4cfaaf766bd80213383239da5d491cd23384dbdbded7c14c769466`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x659A	10448 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.