Malicious PDF — malware analysis report

Static analysis result for SHA-256 301a11f8ae4338fa…

MALICIOUS

PDF

70.9 KB Created: 2021-04-02 05:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e2a59f586c57729b1e2e6c682ce9ba7a SHA-1: 54c4d400b21ca7b406f8f1642c8b2db4fa925fd8 SHA-256: 301a11f8ae4338fa74145a78cf5a655f8b64f3b45e35ec31cfbb46771e93e432
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/wix?keyword=ver+arrival+pelicula+completa+en+espa%25C3%25B1ol+latino PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473403/normal_604937d993145.pdfIn PDF document text
    • https://gupolakeg.weebly.com/uploads/1/3/1/8/131871569/bdff42a0.pdfIn PDF document text
    • https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/6350017.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/dixaluwa.pdfIn PDF document text
    • https://fokifukamanur.weebly.com/uploads/1/3/0/8/130874497/banapusanozovaf-tebadetagusuko.pdfIn PDF document text
    • https://nexajatolotol.weebly.com/uploads/1/3/4/3/134308242/9d507060ec40ca.pdfIn PDF document text
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/ribuwemimolujowuxupu.pdfIn PDF document text
    • https://mifimixaxenerut.weebly.com/uploads/1/3/3/9/133999571/e91bfeb55aa4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385207/normal_601185afd791e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490263/normal_606617f9947be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_a03f826823fb4de188c42df74b310879.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suxiweke/grid_template_repeat.pdfIn PDF document text
    • https://b585a76b-fab5-4024-b0d2-f3ad95444197.filesusr.com/ugd/404203_e8b166c2f75446ff860a197ffd985e0f.pdf?index=trueIn PDF document text
    • http://xabevoratuga.rf.gd/5706647639.pdfIn PDF document text
    • http://xaxelajifamukas.rf.gd/appium_scroll_page_android.pdfIn PDF document text
    • http://jujodixawo.rf.gd/what_does_the_chariot_mean_in_a_love_reading.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/audacity_download_for_pc_windows_7_free_64_bit_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/wahl_cordless_trimmer_set.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/pimozenuvatusazokek.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/pivazodumipamifi.pdfIn PDF document text
    • http://tenexivarafagi.rf.gd/adobe_acrobat_to_word_converter_online.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_off0000d6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C6 5316 bytes
SHA-256: f982efa35514891d0cd78ed94ac5ef2f463709b3f2d6656b0b87ff09d7edfcb0
font_01_sfnt_off0000e888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE888 10824 bytes
SHA-256: d116e23cc2733ffa78eefa10959979336a38383a8bf3be6bf23348b3ea2e0ceb

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