Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea33e919aad705d6…

MALICIOUS

PDF

81.3 KB Created: 2021-03-28 21:11:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 037f2d165356b7f55f55ef7ff1d9c8b0 SHA-1: e6d96f5d256578aab76e9fd1084546ac1ccf4ebf SHA-256: ea33e919aad705d6c0a649167ac8da0fd900e682c6ed3c5dc58d0f1a72e56b2e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9994

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=lego+star+wars+3+bounty+hunter+missions+guide PDF link annotation
    • http://womebaziwime.iblogger.org/92364373644.pdfIn PDF document text
    • http://filfex.ru/kannada_astrology_app_freealc05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_60331162e306e.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/aRGTtnw/12787638528.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377391/normal_60035fbc3d96b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389101/normal_5feedf171a741.pdfIn PDF document text
    • http://susadaxaxavotij.22web.org/gufobujew.pdfIn PDF document text
    • http://fb-ig-copyright.com/gamanefukodikn82oi.pdfIn PDF document text
    • http://okclub.org/9652764008815gp5.pdfIn PDF document text
    • http://eurostore.info/mayabazar_telugu_movie_video_songs_freez2o78.pdfIn PDF document text
    • http://instapriz24.online/sipuwajunekisujr0t41.pdfIn PDF document text
    • https://cdn.sqhk.co/tipusuzog/f0WFB7L/jimmy_johns_menu_sandwich_sizes.pdfIn PDF document text
    • http://nesobaka7.xyz/47102280651y1prv.pdfIn PDF document text
    • https://cdn.sqhk.co/sategexarom/jgo0hAC/94008328830.pdfIn PDF document text
    • http://bimemonok.22web.org/numerical_mathematical_analysis_scarborough_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/mlmyvjj/horror_escape_room_met_acteurs.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/i1KP2ug/sipojodobuxotekol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413375/normal_60446eff52e84.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/0879a0a1-a20e-4dce-ba7f-fce2256d9573/bebujenatagogejebemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0fd77e1-992e-4aa7-b778-296b4583b5c3/dakabipetaxigivagop.pdfIn PDF document text
    • http://nukasero.epizy.com/sr_android_developer_jobs_in_kolkata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f18fc6c7-0b91-4f87-8146-fe08ea413fbe/double_list_comprehension_python_example.pdfIn PDF document text
    • http://xejimeve.rf.gd/53045795587.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_off0000fdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD0 5644 bytes
SHA-256: 34c62504661749df9b2d469072d20ebf92c95aab14cef846d5bbdcb6215e7e3c
font_01_sfnt_off000110f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F4 11208 bytes
SHA-256: 43828f58ebda16ec9ed12f87f67f1339ce913368ff8fc82a9ed8ffa0b877333e

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