Malicious PDF — malware analysis report

Static analysis result for SHA-256 95aebae9fabc98be…

MALICIOUS

PDF

95.1 KB Created: 2021-03-15 03:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 324882d59163b15e0248a032fc814303 SHA-1: 11649c35df6815d09566ab43afae76fea82f6da8 SHA-256: 95aebae9fabc98be83731649cd85aa94eb336745d41d6b05a0c03a93ee2aad11
126 Risk Score

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 0.9992

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://nipisod.ru/wix?keyword=academic+success+worksheet PDF link annotation
    • http://wamuwosola.mygamesonline.org/87879902054.pdfIn PDF document text
    • https://cdn.sqhk.co/mepejuwaj/hbifhf7/xprofile_mod_apk_rexdl.pdfIn PDF document text
    • http://natlab.ru/lines_composed_a_few_miles_above_tintern_abbey_analysish509k.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/como_hacer_una_introduccion_de_un_proyecto_de_investigacion_ejemplolqnqy.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/hjIDhhM/zateduri.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/adventures_of_huckleberry_finn_summary_chapter_23.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/tekipatulumoxolosadax.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/ria1iep/jegadegomilododadupo.pdfIn PDF document text
    • http://thelait.pro/bulleya_sultan_movie_full_songndm6n.pdfIn PDF document text
    • http://m-ryanaf.site/67496020867vy4bg.pdfIn PDF document text
    • http://busforpay.online/launch_creader_viii_update46at6.pdfIn PDF document text
    • http://qlemelest.online/cbic_exam_bookosx2j.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/jdhh8hj/jomedaronilozewom.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/PQjbKCx/princess_and_daddy_hair_salon_near_me.pdfIn PDF document text
    • http://vukipika.iblogger.org/nodedegi.pdfIn PDF document text
    • https://cdn.sqhk.co/forosobeg/DieggU9/58210233368.pdfIn PDF document text
    • https://cdn.sqhk.co/kulamogo/nhdhgvz/ear_infection_drops_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/nikazefuju/dhdidhd/networking_pitch_template.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/meade_autostar_etx-60_manual.pdfIn PDF document text
    • http://bathforlegs.xyz/86389919821qp1rr.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/fjhhghj/best_3d_archery_arrows.pdfIn PDF document text
    • http://kvrovk.xyz/79952066274r1slc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rozipiliwune.epizy.com/starcraft_2_legacy_of_the_void_missions.pdfIn PDF document text
    • http://razafif.epizy.com/2041909530.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_off00013709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13709 5292 bytes
SHA-256: 5fcfcb02917547548f20fe0a224c5c9c7c2ee34fd8a685eebb058a74eef3d404
font_01_sfnt_off000148f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148F0 11200 bytes
SHA-256: b0b72ac6860ead78136d58def91f96dc45b758cdd8de5e3027b2c413bfa5f975

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