Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d287331fe47dc0…

MALICIOUS

PDF

80.8 KB Created: 2021-04-17 07:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6d6a4c5452d4995a9924de7aba114147 SHA-1: d75266a7777e9701d7b9973d142ec214c557cd90 SHA-256: 82d287331fe47dc01b15d80e6206067ee093497d914d4b4bd9d39e40355aeb5c
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 0.9996

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://botokaw.ru/strik?utm_term=synology+ds1515%252B+specifications PDF link annotation
    • http://mubojumef.iblogger.org/did_stephen_hawking_take_an_iq_test.pdfIn PDF document text
    • http://crubr.space/63033742899gi7n.pdfIn PDF document text
    • http://fupodiruza.66ghz.com/84773620198.pdfIn PDF document text
    • http://nazhivy.net/49573645996pl0mw.pdfIn PDF document text
    • http://verexexomebot.iblogger.org/ramesozujowemofikukenumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_6047ccc5517ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_602c69e00c488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_6016c5212ddc5.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://s3.amazonaws.com/kujesulad/lalutepuwijuwifose.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/49735867118.pdfIn PDF document text
    • http://fanixagef.rf.gd/ld_debate_format_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/any_website_video_er_chrome_extension.pdfIn PDF document text
    • https://55963656-6eb1-4b25-bcd5-bb835d65808b.filesusr.com/ugd/0064ae_4153949108164d269c4c40c6fc60bd21.pdf?index=trueIn PDF document text
    • https://da9d63b4-fbfd-4f6f-88e7-06ac0d76355b.filesusr.com/ugd/ca300b_abcbf90f48a94e96bb4f19dffaabf0ca.pdf?index=trueIn PDF document text
    • http://dupenodigilezex.rf.gd/burkina_faso_history.pdfIn PDF document text
    • https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_e9d9375a784648ce8ef8c797dbd0867d.pdf?index=trueIn PDF document text
    • http://nubijusumodas.rf.gd/ralomego.pdfIn PDF document text
    • http://zawuruwune.epizy.com/android_database_tutorial_step_by_step.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_2361a95080ab474d9bf8c6edb56a4e6f.pdf?index=trueIn PDF document text
    • http://wegadikas.epizy.com/ethical_hacking_books_free.pdfIn PDF document text
    • http://vutetokare.epizy.com/91591826950.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 5396 bytes
SHA-256: 748748f126993046840177aa78905618f7dc68f843dc8760b30032dc0dd81e19
font_01_sfnt_off0001008c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008C 11576 bytes
SHA-256: 1b213f599df049e1cdf699628e5a736de3f3a34e5c097452645b9df7aa9012fe
font_02_sfnt_off00012748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12748 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.