Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ceeef5b004db945…

MALICIOUS

PDF

82.6 KB Created: 2021-03-31 15:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4756569b150d02cce2947fab95ea821c SHA-1: d2f714e7f8c8d4e26249fca660658dcb00e64bbc SHA-256: 5ceeef5b004db9450639aa99e94d178362b90ec1c0de80c1278a77ddb6c9c9e9
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating phishing and trojan characteristics. It contains numerous embedded links, many pointing to disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though partially corrupted, contains a title related to horoscopes, likely a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=tu+vi+2020+mang+gi PDF link annotation
    • http://zelumefepa.sportsontheweb.net/absolute_beginners_guitar_scales.pdfIn PDF document text
    • http://rewita.fun/how_to_test_cyberpower_ups_batterypq93z.pdfIn PDF document text
    • http://sozimaxetupow.mywebcommunity.org/64494651482.pdfIn PDF document text
    • http://rufawefojag.sportsontheweb.net/91395463678.pdfIn PDF document text
    • http://dabukim.mygamesonline.org/sorasagaburavevel.pdfIn PDF document text
    • http://zahlungsservice-ch.site/canon_lide_220_install_macu5jl1.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/f27ad12f-7025-4096-abaa-559a87d78e9b/physics_kinematics_problems_and_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702efc76-712d-461d-bbeb-40e617c5ac22/pufenufawipi.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/28722399158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3b0381-c601-4118-b75d-3c15b9ed573a/xibunutulirojewawut.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/turutuzofimefugelixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d524a4a-0f93-48a1-a87a-2e228cb30dfe/85840289459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82458dab-674a-4800-b55d-8636f6a992b8/xazegenogovalufi.pdfIn PDF document text
    • http://lupixopuvir.onlinewebshop.net/arte_da_guerra_sun_tzu_frases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b3ae809-6a6c-4f2c-b1f8-6a686317749d/how_to_assemble_little_tikes_shopping_cart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed2ee0e-8982-4dc5-8c05-7aca32cbddc2/the_seven_laws_of_spiritual_success.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f18e5ae-a382-486c-8b97-5553060be2f6/another_word_for_critical_thinking_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9342e7ed-0727-41e2-aa10-aeb7f7ccbd70/9817232220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc65a905-e09e-4888-99f0-9543d635102e/past_simple_regular_and_irregular_verbs_exercises_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbbcc0c8-148d-49da-98d1-60ab480d6909/31568125228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df96aeda-683f-43be-9266-8a734c5c5184/71529450397.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_off0000f9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FB 4984 bytes
SHA-256: e19b2b67b6f404c7f58dfaaefd5a13085aad813ff44f7c5479d3465b2489a468
font_01_sfnt_off00010ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE9 22792 bytes
SHA-256: e500ee6b8c3ed9387ccd5437a15df4144c7f3395f73bf7bd20e38b152ce409e7

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