Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a7f01519eaccb8…

MALICIOUS

PDF

172.6 KB Created: 2020-10-07 20:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: eaf804407f9d520b9fada5264486216a SHA-1: 95b97a31424f4d63c074eddadbf18746f9814f91 SHA-256: d4a7f01519eaccb85445da8afeb1943132514bee79129d9a8e2e91471c894d2a
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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://gettraff.ru/strik?keyword=bhagavad+gita+summary+in+english+pdf In PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/52973576899.pdfIn PDF document text
    • https://site-1039918.mozfiles.com/files/1039918/62387518366.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/buritovom.pdfIn PDF document text
    • https://site-1039811.mozfiles.com/files/1039811/pesiwuxas.pdfIn PDF document text
    • http://files.energysmartacademy.com/uploads/1/3/1/6/131606060/d656e6.pdfIn PDF document text
    • http://files.wangmoney.biz/uploads/1/3/1/3/131398334/3e662942f6a5e0f.pdfIn PDF document text
    • http://files.thundercounseling.org/uploads/1/3/0/7/130775249/1486454.pdfIn PDF document text
    • http://files.brandongillin.com/uploads/1/3/0/8/130813988/72d1ae042a68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9431/3622/files/89832694660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/zavivugijododijiguti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7167/6314/files/lojuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4177/8585/files/59129243101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9376/3266/files/nudon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4841/8466/files/albion_online_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0729/3086/files/taborusanubejaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7247/files/suwatomimejamewasurunufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7230/6843/files/vaxame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/17407815895.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x246CE 5668 bytes
SHA-256: 18c30a0bd44438d2a5166eeb7add7e603107625174e211c882121628173861d8
font_01_sfnt_off000259fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x259FA 3740 bytes
SHA-256: 814992be763021c11dca23fed22b8bb7a0f9688c8b5af2f3d58b36f318d7b63c
font_02_sfnt_off00026574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26574 12504 bytes
SHA-256: 89f1d79af2d7be5ca0f2e16d855a3f672e67840bdee1c531278e11d1d6ccc29d
font_03_sfnt_off00028cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28CFC 6524 bytes
SHA-256: d1a96f789def34e563a68040622125a15a9e984cd3a545eb0faa156e8d3b3dc6

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