Malicious PDF — malware analysis report

Static analysis result for SHA-256 2873a04d21f9ee8e…

MALICIOUS

PDF

72.8 KB Created: 2021-06-07 17:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e4d3294cd4920cbdc2a34bfc2557e7c8 SHA-1: af68cd0b661e2033149803707f3c77d2a31dcebb SHA-256: 2873a04d21f9ee8eecb5f431a5341db3fc8411ae41b21baa5b1e52269a4c3817
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a site offering movie downloads, suggesting a lure for users. The PDF structure and embedded links indicate it's designed to redirect users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://oniceh.ru/pbw?utm_term=over+the+hedge+full+movie+download PDF link annotation
    • https://jagewimaw.weebly.com/uploads/1/3/4/0/134012974/rumodoves.pdfIn PDF document text
    • https://wonimigapikil.weebly.com/uploads/1/3/7/5/137509794/4c625383eda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404969/normal_5ffd749ceba52.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/8634440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486775/normal_605cba1ea56f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_600d6b230db8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416319/normal_60418ded09b51.pdfIn PDF document text
    • https://semotifivunadi.weebly.com/uploads/1/3/1/3/131380295/wuzopezopixa-luzitebudoxu-rakiretotugug-piselalegokip.pdfIn PDF document text
    • https://ranadapibefa.weebly.com/uploads/1/3/0/8/130874213/c6840da75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475219/normal_606a5f853f35f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mupalunava.pbworks.com/w/file/fetch/144648927/arcade_games_claw_machine_dubai.pdfIn PDF document text
    • http://siseraxoru.pbworks.com/w/file/fetch/144484554/how_to_learn_python_programming_language_for_free.pdfIn PDF document text
    • http://kepigiwup.pbworks.com/f/70243066469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf252a2-b775-4e87-bebb-5a1794de06c4/personal_finance_budget_template_excel_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ee2db3-acd4-4fcb-bd9b-b27d2789dd2d/how_to_safely_dispose_of_smoke_detectors.pdfIn PDF document text
    • http://gugatodoka.pbworks.com/w/file/fetch/144777102/the_complete_acid_reflux_diet_plan_by_nour_zibdeh.pdfIn PDF document text
    • http://jiboduxoguv.pbworks.com/w/file/fetch/144500067/win_10_performance_issues.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/w/file/fetch/144411426/buwurezomenidelolafulawis.pdfIn PDF document text
    • http://jolunatimavu.pbworks.com/w/file/fetch/144505989/41580347975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca6ff64-1727-4100-a265-478a1f922bb4/79910896196.pdfIn PDF document text
    • http://bukafag.pbworks.com/f/15208556287.pdfIn PDF document text
    • http://goferupemo.pbworks.com/w/file/fetch/144628182/melemejesa.pdfIn PDF document text
    • http://togusan.pbworks.com/f/jomumozevid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa6543d8-9171-4edc-a762-555ada041181/best_moveset_for_single_strike_urshifu.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144413280/panawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e52aac4d-f171-4b45-98ca-6e48dd044992/27696948913.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_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 5324 bytes
SHA-256: cd314daf240b24acbe30d3380ef662b5acf3001424a7f8d9b9d276785bda37c7
font_01_sfnt_off0000f23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23D 10276 bytes
SHA-256: b0a4df61ec63a436c9f0379dbc5baa42e93deb1e4556cd9ac640696d60c1f44b