Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5601068cefbd30…

MALICIOUS

PDF

80.0 KB Created: 2021-03-31 12:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0a53e5632c660a49d15e15bfddd21292 SHA-1: 59ea12282fc9585ab34907b18d9f632353438286 SHA-256: 7a5601068cefbd30e8fb40feec05d84bd7beac6a29647272d62516914f5a17b6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/strik?utm_term=ft-450d+review+qst PDF link annotation
    • http://vsyahakasia.info/gesofojazomalanedadohpwt3.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/how_do_you_do_capital_budgeting_tools.pdfIn PDF document text
    • http://pixidilivutep.medianewsonline.com/77135360123.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/devalerepuzufuw8g5qh.pdfIn PDF document text
    • http://emirofficialzm.com/friendship_kavithaigal_photos2stj7.pdfIn PDF document text
    • http://prechambre.xyz/49210127996csvk1.pdfIn PDF document text
    • http://fumatiw.mypressonline.com/10304318261.pdfIn PDF document text
    • http://zenajok.medianewsonline.com/aldehydes_and_ketones_ncert_solutions.pdfIn PDF document text
    • http://doxedisipi.scienceontheweb.net/ocupacin_reunin_oficio_profesin_trabajo_1_of_1.pdfIn PDF document text
    • http://vodizurulenega.mypressonline.com/8601369223.pdfIn PDF document text
    • http://zisezamerares.mygamesonline.org/baruch_spinoza_biografia.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/2ba8650d-1e7f-49fa-abba-26e8aa8fbd9e/crazy_love_book_just_stop_and_think.pdfIn PDF document text
    • http://medexode.atwebpages.com/56676213876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01df3e40-99e7-4995-8d97-51f9bd12b098/2005_ford_focus_manual_transmission_shift_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab411d30-6541-4516-bab9-c427d62561eb/wagij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35f125ce-53d4-4904-8160-7cced8a7fbe0/66309671777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a82f6e-317c-4183-afe2-ae9573d1582d/vatukolijagotipefemeben.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/631c31fc-cb5d-4e45-897b-7cd6a69bc661/how_to_mix_music_together_on_garageband.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f69cfa-40aa-4de9-8ffe-8d5c3354c30f/83206570386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f250dac-819f-4f6d-acd5-4916dbca0709/powejazojirexadiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/256f647f-ab98-4af7-92af-e9a7133dfd93/eclipse_phase_backgrounds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef940d4e-9284-41cd-a2cc-f67582645d83/rawasubuwetisemuge.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BD 5196 bytes
SHA-256: 1b309c4a81d0248b7683880c26c012c74cbd2fc32933c40df3a808982a06ec29
font_01_sfnt_off00010ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA5 11504 bytes
SHA-256: 0f2e407093572b444c5c10b420a5edaa742880b49571ed8db3f8772f567a443d

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