Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6eae415312d24a9…

MALICIOUS

PDF

82.3 KB Created: 2021-04-25 18:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 576f0b5c04b3578c31fb5f54c1e35fdc SHA-1: 53d534cdf4a8fbb2ceae9a4904b099a0e8780691 SHA-256: a6eae415312d24a9f9c36c09ab1b5f9af67be2ce006c158208fb0fc796ab6631
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/strik?utm_term=the+man+in+the+high+castle+season+1+episode+8+cast PDF link annotation
    • https://cdn.sqhk.co/loberutebe/igHIieH/ridugokisavipubeva.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/iNVhcie/lorigowofe.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/s1gj1gg/newufetukejowizarirek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eadf565-9500-43d4-b855-2385fd475791/how_to_install_samsung_galaxy_s5_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/rafeva.pdfIn PDF document text
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_2e5a7d668991403f8857093eb66ba84f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/baryonic_matter.pdfIn PDF document text
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_122df43886f449e48a90a5ad943eeaa9.pdf?index=trueIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_dba73e494e7c46be986447d7231ef4e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/7711212023.pdfIn PDF document text
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_5a6ae027f7074b9aabc1ea7ccd6b4370.pdf?index=trueIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_4c3ac447c6a34e1e889741dd4812e3c5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/vekuteno.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/21142231437.pdfIn PDF document text
    • https://0c17d2ad-06a2-4efd-9128-26148cac6670.filesusr.com/ugd/44320b_f98b9682ec3e4e069a9d529ecce3b9bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/lelexogawivodowomajokam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20bd0a5c-5472-4b38-b880-60bec933bf8f/what_does_a_global_communications_manager_do.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/nujeginat.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/64320331771.pdfIn PDF document text
    • https://8e12fe21-47c1-448c-af9e-883e7c84523b.filesusr.com/ugd/52ac5e_eba9d7dc174146f09b3ea96a6805e423.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/yamaha_emx5014c_powered_mixer_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/bear_archery_cruzer_g2_manual.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BA 5584 bytes
SHA-256: 026fd7d55bdfb532c8fd748bd69ae901b8897955d77a43dd84f0345d3204a88d
font_01_sfnt_off00011491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11491 10916 bytes
SHA-256: e8502ffb629e3532da58ba41fdeea1858a5c4f37bf00ed2868cb21c798e4d498

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