Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b46e98cbb613fbb…

MALICIOUS

PDF

92.0 KB Created: 2021-03-15 05:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 433b51ed309dc17aefd618e06e2545cb SHA-1: 5a5025b16d3080fed3a36b466401f7c3dc62bf9e SHA-256: 8b46e98cbb613fbbc6c3f204ad48eaaf25b76cc92246a8e7a0ad1e73d07e5d65
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 0.9988

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://vilenefex.ru/wix?keyword=rocky+mountain+incident+management+team+black PDF link annotation
    • http://zoomita.space/12183776550vfnz0.pdfIn PDF document text
    • http://steblin.pro/arjun_reddy_movie_kiss_scenesvthi0.pdfIn PDF document text
    • http://igafnd.org/is_a_pr_degree_worth_itodr0m.pdfIn PDF document text
    • http://detonic-shop.website/38398320370mphrs.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/52087506828aq355.pdfIn PDF document text
    • http://medicinfo.online/blacks_law_dictionary_4th_edition8udmq.pdfIn PDF document text
    • https://dopapebo.weebly.com/uploads/1/3/4/8/134870178/ab79b9bd7.pdfIn PDF document text
    • https://gugekomu.weebly.com/uploads/1/3/0/9/130969097/e1cf2acdee168a.pdfIn PDF document text
    • http://sun-italy.space/41164230071zeck2.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/angry_bird_2_mod_apk_data6gq46.pdfIn PDF document text
    • http://rawenspant.online/bexelezufipuvapesukonoi3e1o.pdfIn PDF document text
    • https://lopodegif.weebly.com/uploads/1/3/2/6/132695694/wekoxodiv-nugeletole.pdfIn PDF document text
    • https://kixasakuzejud.weebly.com/uploads/1/3/5/3/135347884/3ad4ca8de499.pdfIn PDF document text
    • http://floradoma.net/how_to_draw_easy_halloween_thingsli296.pdfIn PDF document text
    • https://lekemevegov.weebly.com/uploads/1/3/1/4/131410090/0794c.pdfIn PDF document text
    • http://chaptejvxz.fun/juganovewy5ln.pdfIn PDF document text
    • http://whalesqpa.fun/can_i_connect_usb_stick_to_ipad1fsfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gimusatis.rf.gd/anita_anita_song_com.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/restaurant_business_plan_template_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5a3523-a7c9-458b-8cf4-d21f4ecc7fa7/berop.pdfIn PDF document text
    • http://warepeg.rf.gd/bhagavad_gita_quotes_in_tamil_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d75f86-25dc-4e65-905a-cb6a3a1b91ca/srimad_bhagavad_gita_gujarati_audio.pdfIn PDF document text
    • http://wazilopuwifelig.epizy.com/how_to_reset_toner_counter_on_brother_printer_mfc-7860dw.pdfIn PDF document text
    • http://tekunobujolid.epizy.com/investigations_3_math_answer_key.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEE 5296 bytes
SHA-256: e5e3882c31db903737787de0041d71ce94226ccc0e64415c53ace33fe72d7168
font_01_sfnt_off000121f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121F9 12136 bytes
SHA-256: f37d613e9651676c00bfe9e412219bde6bb0d916a9514d44d3295864e83046d7
font_02_sfnt_off00014aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AED 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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