Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af7f295aa5b09a5…

MALICIOUS

PDF

70.4 KB Created: 2021-03-21 06:35:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 09aebb08ba8a8e954fec00d5f26fed55 SHA-1: 1a14b897e303697ec4e982fc425edd8b8cde4d12 SHA-256: 9af7f295aa5b09a5bd26e986ad6898cada8d1b298190274c0db1f7916d6799ea
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 0.9998

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://druttle.ru/123?utm_term=chaska+song++320kbps+pagalworld PDF link annotation
    • https://cdn.sqhk.co/loxepafigav/knTOheI/tenudolidifijasore.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/mZqQnYS/62181573981.pdfIn PDF document text
    • http://nitesufi.sportsontheweb.net/fofitakadikuvobitopop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489409/normal_602761f25b6d7.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/6hdhjhh/losanefizugaralukid.pdfIn PDF document text
    • https://cdn.sqhk.co/woledibiroju/hejchh0/faladuta.pdfIn PDF document text
    • https://cdn.sqhk.co/vofepubot/DPjaNjc/jamb_chemistry_past_questions_and_answers.pdfIn PDF document text
    • https://bafuzonexive.weebly.com/uploads/1/3/0/7/130739369/puvupomesutevazeno.pdfIn PDF document text
    • https://cdn.sqhk.co/razanifuwuz/ijgQsPO/question_answers_photography.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406812/normal_602412c6b56a1.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/how_to_answer_why_amazon_interview_question.pdfIn PDF document text
    • https://sexozubo.weebly.com/uploads/1/3/0/7/130740033/13e0e1d0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_601240ce29975.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/53552738443.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bb25ac31-27f7-46d7-b2fa-2af9367ed8c5/how_to_animate_in_procreate_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19ad69a8-be8e-463e-9452-90ded6182b51/star_trek_enterprise_season_1_episode_24_dailymotion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/887f8a2a-a85f-432f-802d-225f8a1be110/tozufopesuvipewuxoxil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC899 5520 bytes
SHA-256: 073787344f26541ce23ff53d09bc9a290fbad8c0058801ccb87c24b6eb1c392b
font_01_sfnt_off0000db48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB48 10124 bytes
SHA-256: 5f21c8fc2c3cbb32ddfa2c5851143ea33ca522905c29716c9bad326e243625c8
font_02_sfnt_off0000fdf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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