Malicious PDF — malware analysis report

Static analysis result for SHA-256 046f3a6d8781ee4a…

MALICIOUS

PDF

60.0 KB Created: 2020-11-07 18:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3fada649c404bad2c58de90d747d10cf SHA-1: 74b274a1da74b145fa6a721cc222175d9cdeeb15 SHA-256: 046f3a6d8781ee4ac816359f915e4d31b9a20e4123990228b65a8633bd2ce295
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure. The document body also contains a URL that appears to be part of a link farm, suggesting a tactic to manipulate search engine results or distribute malware. No scripts were extracted, but the presence of numerous malicious links indicates a high likelihood of user redirection to harmful 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://traffmen.ru/123?keyword=poverty+yahoo+answers In PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/vamefuxuxufib.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/dinipufo_pomupizutib.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/f5e41d7eea77a4.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/nepigu-sazefom-vonujemegidexot-rabese.pdfIn PDF document text
    • https://debekekuwafa.weebly.com/uploads/1/3/4/4/134473288/cb64cfc1.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/550162d5.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/widipumov.pdfIn PDF document text
    • https://s/os/creatr-uploaded-images/2020-11/abc721a0-20d1-11eb-97fe-39893da738cf,lgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/wuduxubax.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/adobe_acrobat_8_scan_to.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/21360242038.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/panasonic_bread_maker_sd-_2501.pdfIn PDF document text
    • https://rawunimuz.files.wordpress.com/2020/11/jack_of_nine_tails_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/31195080343.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/gipajoremujon.pdfIn PDF document text
    • https://rovapine.files.wordpress.com/2020/11/61795685836.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/rerununozazuri.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C76 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off0000a6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6BA 4996 bytes
SHA-256: 90b57537c0df05ceb4424aa751b3b428d5e85feb1443d5ca185020a156bd7aac
font_02_sfnt_off0000b7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7CD 13572 bytes
SHA-256: 85f47a75f72f95bdc2336638ce43e299ea5ae2273d537e2c34482676b6326d7f

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