PDF malware analysis — malicious · 09350ca21f1494fd

MALICIOUS

PDF

48.8 KB Created: 2020-10-28 20:35:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 568ba0809f82484e217bc80f0ef49865 SHA-1: 82785ca676e646d24994b9b874f4d8d587e0c6de SHA-256: 09350ca21f1494fd8d4398fd254aadf7448a647083172f72c9f9559ce79eea4e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://cctraff.ru/aws?keyword=mark+ronson+uptown+funk+download+video', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a song download. The presence of numerous external PDF links, many pointing to S3 buckets, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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://cctraff.ru/aws?keyword=mark+ronson+uptown+funk+download+video In PDF document text
- https://cdn-cms.f-static.net/uploads/4417207/normal_5f966d54b0fef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378383/normal_5f8da253f343e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368467/normal_5f8d11a7e96f5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372073/normal_5f8e0b9024118.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366022/normal_5f961d92cf26d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403422/normal_5f93f246b671e.pdfIn PDF document text
- https://febukorev.weebly.com/uploads/1/3/4/3/134325382/b46543.pdfIn PDF document text
- https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373992/normal_5f92286e1c672.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373999/normal_5f8f68c1908ad.pdfIn PDF document text
- https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/997cbf5025e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380384/normal_5f8caf556d8c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370307/normal_5f91fc9406197.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378599/normal_5f8dbd4a25998.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375908/normal_5f8cbc2b1cfe7.pdfIn PDF document text
- https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/zezavosemadot-pexer-gelematijomube-noselar.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366348/normal_5f8717687e8ee.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/vibuvomomuv/ansys_workbench_tutorial.pdfIn PDF document text
- https://s3.amazonaws.com/banula/aide_memoire_mathematique.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0494/0349/4567/files/steed_stone_skyrim.pdfIn PDF document text
- https://s3.amazonaws.com/xanebavifamopez/93846793104.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4542/1205/files/alphabet_phontique_international.pdfIn PDF document text
- https://s3.amazonaws.com/voxulija/salarakalogasavekovitij.pdfIn PDF document text
- https://s3.amazonaws.com/fikuvine/anticorps_antigne.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0461/4245/5961/files/royals_diamond_club_seating_chart.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_off000061ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61AE	5256 bytes
SHA-256: `108cb6bfd7723ce27e32475f600c2e5754002564fe0d9ee44316847fa1685f62`
`font_01_sfnt_off000073c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73C8	12128 bytes
SHA-256: `868200bb27e4d94f64b9b01025e501c0654d8f58de483c2d9bc848b2d5d44566`
`font_02_sfnt_off000099cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99CC	17180 bytes
SHA-256: `134d55893ae6014cf6a4d8d985304d218cbdf7d289da4ffd0d7557d7ab2c85ac`

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