Malicious PDF — malware analysis report

Static analysis result for SHA-256 9028385ded617f21…

MALICIOUS

PDF

77.3 KB Created: 2021-03-06 05:07:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6620d55f4a5461e7bec7cec5b685d949 SHA-1: 2db8fc816e29e7584931870ade6afea50eb5a5b9 SHA-256: 9028385ded617f21e366a850f4bcf58011bb78e935c8100544e3c0b452b8e81e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with several pointing to disposable domains and one specifically structured as a search result lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document is part of a link farm designed to redirect users to malicious content.

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 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://fokemale.ru/123?utm_term=what+size+bobbin+for+singer+4423 PDF link annotation
    • http://songkfrk.site/kezetezitenodoleu7vj1.pdfIn PDF document text
    • http://ridunculus.com/77701448317ui5am.pdfIn PDF document text
    • http://peregukejipesa.iblogger.org/33569163598.pdfIn PDF document text
    • http://bred-enligne.com/zibafobepifuxutobocpcmu.pdfIn PDF document text
    • http://1xbet-registrat.site/73190806132o9jb6.pdfIn PDF document text
    • http://bobiruropiles.22web.org/37300749790.pdfIn PDF document text
    • http://fortuneo-enligne.com/lisobegetizupaovnvv.pdfIn PDF document text
    • http://choosemadam.site/wilton_tip_2110_how_to_use6ng3x.pdfIn PDF document text
    • http://storedubai.shop/how_to_fix_bobbin_holder_in_singer_sewing_machinekw27u.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/50e77e69-2cad-4c8e-a340-d06147a4eb67/sisojupuwalusureloliziduv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/863f95e2-54e4-467f-9694-ed237acd4544/black_and_decker_toaster_oven_manual_to3260xsbd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7356da17-357f-4884-aabd-ca6db4f37a08/how_to_find_resistor_color_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d29e310-ea98-4745-b3d5-90d3006f2fd2/ma_english_literature_distance_learning_india.pdfIn PDF document text
    • http://nalujisutu.epizy.com/bootstrap_3_form_control_error.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898f8dbb-5ef1-4045-a5df-a620cf523cef/metobafudinage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60e24f6f-cd43-4290-b8f3-fa368c2e56a9/taco_bell_chipotle_chicken_burrito_calories.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/math_geometry_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/wobadenefasedoviwofuva.pdfIn PDF document text
    • http://kotidaw.epizy.com/3592298086.pdfIn PDF document text
    • http://topuwagib.epizy.com/laporan_titrasi_redoks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe051eb-4fad-48f2-a60d-2c1f5d23ac71/used_dillon_reloading_press_for_sale_craigslist.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_off0000f0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 5584 bytes
SHA-256: 109a8f7de0e7b542d279332ffd2d13d98337071708fd4816a984ecff393b9e77
font_01_sfnt_off000103c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C1 10496 bytes
SHA-256: aed8c85e76918f389d64a71cbfbaa26dc5d7cc0fdf1ab4edf5c779a1f39bf6af

Open this report in the interactive analyzer, or submit your own file for analysis.