PDF malware analysis — malicious · 369e3f61aec5a94a

MALICIOUS

PDF

57.1 KB Created: 2020-10-25 21:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 0c194d536d3d2a6b381573a0040bb85d SHA-1: d76aa2d80585da992301cddae17b62fadc9c6038 SHA-256: 369e3f61aec5a94a27a27a9bce5e64edded2db930168300e8458c86cf2095b41

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or direct users to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=manual+camtasia+9+portugues+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4382772/normal_5f8df9e66ad35.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388413/normal_5f932124aa8ca.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366405/normal_5f87c157eede2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366031/normal_5f8a3f10248b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392191/normal_5f8f06968d180.pdfIn PDF document text
- https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/fisalozete_temomivemuxobi_zoriwip_wugukurudaz.pdfIn PDF document text
- https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/6283841.pdfIn PDF document text
- https://fotobuwab.weebly.com/uploads/1/3/4/3/134368258/9157335.pdfIn PDF document text
- https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/wijedigu.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/zategafozasiru/projector_acer_x1123h.pdfIn PDF document text
- https://s3.amazonaws.com/golepe/grade_4_math_worksheets_free.pdfIn PDF document text
- https://s3.amazonaws.com/lakadutof/unity_bank_aptitude_test_questions.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/79571747734.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/pakesazonomelibilefe.pdfIn PDF document text
- https://s3.amazonaws.com/fujadabez/dependent_independent_clause_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/napejaxosinages/65941444205.pdfIn PDF document text
- https://s3.amazonaws.com/zobuwubedak/magusodanu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1021/2518/files/ranitidin_ditarik_bpom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/7645/5066/files/73629547933.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0485/2478/7867/files/resource_management_techniques_by_v_sundaresan.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007d95.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D95	5636 bytes
SHA-256: `80ed693bdc67471ea4f7ab1b3abb6ad23a43fe723f8433cd7f5ef4b19e789315`
`font_01_sfnt_off00009097.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9097	1896 bytes
SHA-256: `099d89093be102135c911a0e1d6cb497d4af1896e50bf9510546e5131dedf018`
`font_02_sfnt_off000099ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99AD	11672 bytes
SHA-256: `ecaeaac6cbace20dbc65a0ee24a479bf792338b25418bb85e0285d806edc722a`
`font_03_sfnt_off0000c119.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC119	16312 bytes
SHA-256: `975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15`

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