Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b700bffcf5d274…

MALICIOUS

PDF

70.2 KB Created: 2021-02-22 03:54:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7152838f57384840b9778ce43b7ad7dd SHA-1: 7133027808f949bdfef1011e174d8d367b103065 SHA-256: d5b700bffcf5d2745f495f662b087667a63e66e420dbc106ec1e6a3e0404bb0f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=fundamentals+of+database+systems+7th+edition+notes PDF link annotation
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/320230.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/giaJjbw/free_christian_music_internet_radio_stations.pdfIn PDF document text
    • http://chempion.coffee/tokyo_jr_map4ljmo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426830/normal_5fd880af7089a.pdfIn PDF document text
    • https://pufinixebajev.weebly.com/uploads/1/3/0/8/130873949/woxudegodikelekiwu.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ijjiO47/polaroid_originals_cameras_and_stranger_things_collection.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464735/normal_602ad5aae5559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447253/normal_60312f8a1eb2b.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/Jojfi90/tadijunexafupimifo.pdfIn PDF document text
    • http://bestunew.xyz/child_care_leave_format_in_west_bengallor9n.pdfIn PDF document text
    • http://zatoboyvibor.fun/lettering_guide_tooll92vz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470698/normal_6020a4cc94c18.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/rekorewexidiwo/entrepreneurial_intention.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/new_york_charities_bureau_form_char500.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/pflanzenbestimmung_nach_blattformen.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_off0000d4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A7 5328 bytes
SHA-256: 687709c2f18b33d3905eeaf62e244b12d6ffa949b9b7e30bdb589604d2cca4a8
font_01_sfnt_off0000e6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B6 11048 bytes
SHA-256: 46c8e4731069998160db283fbebd557f4b8a97a7fa0cd7f11a483f66bcb6fe76