PDF malware analysis — malicious · 632e8a6d994928ae

MALICIOUS

PDF

47.6 KB Created: 2020-10-28 03:27:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 7a4fd645a0343948d541468e25f28751 SHA-1: 4f96ed49274babc0fb868f6cc68bca430ebdb0b5 SHA-256: 632e8a6d994928ae7388276c84a5fc40c9e98ab7d1f7e35cbd0882ef9c4d3ab6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to direct users to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.cc/123?keyword=36+dry+oz+to+cups In PDF document text
- https://cdn-cms.f-static.net/uploads/4403938/normal_5f93a6a50bfe6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376374/normal_5f91f4d3de728.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366028/normal_5f8bf2d47acc3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367268/normal_5f945e202e6a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368742/normal_5f912c2ea0500.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/78399c7f-6bba-4ab8-8dd2-73bb25cb54b1/rajebokazuzibibajivi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/226929df-c62e-465e-92aa-c6bf3b611878/ninaxerokojesodinun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d434681-469b-428e-8d4f-a8f1abba1cd2/gumav.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3cf1ed96-073e-4c83-89dc-0481b4c87b06/one_piece_zeus_and_prometheus.pdfIn PDF document text
- https://s3.amazonaws.com/davawina/4491948545.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/lobifumid.pdfIn PDF document text
- https://s3.amazonaws.com/degagaziv/prelude_in_d_minor_bwv_999.pdfIn PDF document text
- https://s3.amazonaws.com/memul/xuzowikumozesitegi.pdfIn PDF document text
- https://s3.amazonaws.com/miwolezedubujoz/bookmarking_adobe.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/31442714469.pdfIn PDF document text
- https://s3.amazonaws.com/jeromopelurab/pawakewifetapawagogosep.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/56184196300.pdfIn PDF document text
- https://s3.amazonaws.com/wegemebufojafak/pifikedise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/7431/8236/files/77671287427.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/6088/7193/files/grid_autosport_android_release_date_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/94539ffe-0b9d-49a4-9d33-bd1f88697dd6/24105347752.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95f6ebef-6539-4a92-bf53-f0723c80e7d9/86945196645.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/27547d37-f9c2-45e6-9aff-188fd14bea36/jipusetazonirevamib.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000065d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65D8	5200 bytes
SHA-256: `d42d14aa6c3ff01c8bdeaa8157365578f1d4fa688c3981bdc4df5ff710c24608`
`font_01_sfnt_off00007799.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7799	10484 bytes
SHA-256: `eb470a33113c2f72884f50905f13736edbc751055ce04a2f3264b01836454da2`
`font_02_sfnt_off00009b9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B9C	16216 bytes
SHA-256: `0488c9f99e0fcd21ca2988e9d429c6d59fec344e78892dfd70b5e7a88f9c948a`

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