Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccb0ab6aa3f5529…

MALICIOUS

PDF

72.0 KB Created: 2020-10-21 21:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5aea2bd0da6dc132295cbe4b8a8e64e7 SHA-1: 9c76865a3c5505a91e849b238908b37162d0fdf5 SHA-256: 0ccb0ab6aa3f55291c18c1aee7a831942426b596b36d229e11e468e8b7aadaf2
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious website. The document body, though heavily obfuscated, contains text related to 'Legendary yoda toy instructions' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt.

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://gettraff.ru/strik?keyword=legendary+yoda+toy+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f870edebfa55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f897b2ac1ce3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f8b769de47f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f875339212f2.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/zuxadol/matinijan.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bibozejaj.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/guitar_chords_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/72402777035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8982/8771/files/cnd_shellac_color_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5413/5976/files/flavios_home_by_gordon_parks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1087/3750/files/tip_of_the_tongue_phenomenon_in_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7152/files/83915681889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6806/files/molecular_genetics_review_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2393/9753/files/machine_independent_macro_processor_features.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/932227526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5008/1690/files/super_mario_game_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3913/7702/files/98436051111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1789/1750/files/jupakegotixew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/yellow_colour_hd_wallpapers_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/magidisatunivelewoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1534/7617/files/bevog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3178/8182/files/19015393877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/fannie_mae_guidelines_on_notes_receivable_income.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2409/5653/files/lean_belly_breakthrough_program.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D3 5116 bytes
SHA-256: 099c6fa0e1dac32c37b07339a8acd99ea955cab57a88b627b8485150c5610c8e
font_01_sfnt_off0000e956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE956 12984 bytes
SHA-256: da8386b7d7fcb08cd1cd975830f1d1b256688e36b4e6bd527ef2aebf6964c9e2

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