Malicious PDF — malware analysis report

Static analysis result for SHA-256 09922056a481c1b0…

MALICIOUS

PDF

69.0 KB Created: 2021-03-21 02:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1480c979e521c80f7626e5091e4edcad SHA-1: d98fd687f57eaa180a4cf6aa1131ce96025f36a6 SHA-256: 09922056a481c1b01f1f33411cd053a6ec672ec3a7fd1a278b9c5683c8265644
126 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm designed to redirect users to malicious sites, as evidenced by the PDF_SEO_DISPOSABLE_LINK_FARM firing. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded URLs point to disposable domains, reinforcing the phishing lure.

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://golowaki.ru/strik?utm_term=precor+efx+576i+owners+manual PDF link annotation
    • http://preplafond.xyz/jenebanebgchpd.pdfIn PDF document text
    • http://whysmall.space/disaster_area_inspection_report_form1ni7n.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/one-dimensional_superconductivity_in_nanowiresx7pby.pdfIn PDF document text
    • http://everydayy.fun/famous_math_brain_teasers8rds2.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/misonudubexo.pdfIn PDF document text
    • http://ionatr.space/50089318540i9oia.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/android_java_tutorial_for_beginners.pdfIn PDF document text
    • http://chatik85939775.fun/mitazalumepeluxiko8ebby.pdfIn PDF document text
    • http://wtia.space/samsung_soundbar_hw-j450_specst50vs.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/foninomik_fewonejotek_nojuf_pokipamojulo.pdfIn PDF document text
    • https://gebifulud.weebly.com/uploads/1/3/0/7/130775692/wepopegetipeb_rifurokumokarir_mumaxoxib.pdfIn PDF document text
    • http://begemotiks.space/jurnal_akuntansi_manajemen_2014oxy5s.pdfIn PDF document text
    • https://nanoxoxudotu.weebly.com/uploads/1/3/0/8/130814682/galovavagegab-xedasugibixu-joporibis.pdfIn PDF document text
    • https://dejerolet.weebly.com/uploads/1/3/4/4/134444382/kesiz_torixikuzoloti_pezilumuz.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/0a09d109-8c3b-4259-9517-fcfe82a72959/does_the_2004_lexus_is300_have_a_2jz.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/nojotogenujazizozat.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/62842250921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba31568d-a0c2-45ca-b32f-7e6661b75649/poulan_pro_pp4218a_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82b0032e-acd6-4059-a17e-ca8e64049a10/dell_latitude_e6510_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375c3578-0049-43db-b71b-445006b78f74/probability_and_stochastic_processes_3rd_solution.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/guvijawuxibafimusesilevoj.pdfIn PDF document text
    • http://nofolimuri.myartsonline.com/coffee_break_german_notes.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_off0000ceb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB7 5548 bytes
SHA-256: a615b06843689ab22a8b6f4e274cfb3124976d5ac3ec517ca4eaf41155438ebe
font_01_sfnt_off0000e1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A1 10648 bytes
SHA-256: bfcbeb2edd77c3e803b4f502785deca495e85b0bbf21552d227ba20a9db81ee0

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