Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0023fcfb95dc976…

MALICIOUS

PDF

116.3 KB Created: 2021-04-03 18:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bce591091f37c425647d9f6a2fc15442 SHA-1: 5871ef555846c06d849938e0fadc277290f2ee7a SHA-256: b0023fcfb95dc976a69d39d3f29579452a1a0e77654a63924ca9d59d4124e98a
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://yafferge.ru/award?keyword=adiabatic+process+derivation+pdf In PDF document text
    • http://dwatches.site/cooks_essentials_electric_pressure_cooker_2-quarts1wqhe.pdfIn PDF document text
    • http://grigolia-studio.ru/30412980190qa9j3.pdfIn PDF document text
    • http://raisinshq.club/mazegomawupumakufosjfa2.pdfIn PDF document text
    • http://senteber.site/pressure_conversions_worksheet_13-137lvk.pdfIn PDF document text
    • http://shimano-stradic.ru/tibogegobiicuz5.pdfIn PDF document text
    • http://wersita.fun/le_petit_nicolas_cartoon_with_english_subtitlesymwp8.pdfIn PDF document text
    • http://online-bestshop.xyz/wilabojaxamiwilazevepiqssc9.pdfIn PDF document text
    • http://justiciaforjustice.com/524257924542ry4t.pdfIn PDF document text
    • http://re-prime.ru/pere_ubu_modern_dance_reviewu3pl3.pdfIn PDF document text
    • http://bazis-rostov.com/the_power_of_now_summary_downloadtskv3.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/xisakazelelinim/allen_bradley_powerflex_525.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/adding_integers_worksheet_word_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/52434281801.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/92159622144.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/fundamentos_tcnicos_y_tcticos_del_baloncesto_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/91839634515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe71ea26-bc31-43ba-8acc-121677e6c8fd/parts_of_speech_worksheets_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a33b869e-cfea-46a5-a0f9-eace6fc34eaf/mortal_engines_book_series_age_rating.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/kidip.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/how_to_check_marriage_astrology.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/11104917299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cea3b731-01a9-4d9a-a9c2-e28ac7979983/winutexatetosovetitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39d073e1-a3db-489b-ad17-fc26b856047b/best_mutual_funds_for_2020_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/comcast_tv_channel_guide_denver.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/goxim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f21f4e71-0297-434f-b424-4923e3a5639b/weber_spirit_classic_e_210_gas_barbecue_cover.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_off00016a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A81 5304 bytes
SHA-256: 0bc7b5dfa86245eaa68781ead4a279562b1515248766458dc4878d8e7e8284f0
font_01_sfnt_off00017c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C9C 15136 bytes
SHA-256: 6c2dd865f78bdacb495542d2b7465533c0d0b1f2f02c1067893cea586ea574ca
font_02_sfnt_off0001ade2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADE2 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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