Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bbe5ed45f71250e…

MALICIOUS

PDF

114.9 KB Created: 2021-03-15 14:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e212fde5b1547b7809f46cba7a95e260 SHA-1: 5b9e8b8b651c035965309e5c8f584effcd771b41 SHA-256: 0bbe5ed45f71250ef192dee1aef3c70dcbe04baec21f3388edf333573d9dab34
126 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure for a free PDF download, aligning with phishing tactics.

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://resalured.ru/wix?keyword=stargirl+jerry+spinelli+free+pdf+download PDF link annotation
    • http://cardio-natural.info/what_are_the_duties_of_a_woman_in_marriagezn4tt.pdfIn PDF document text
    • https://cdn.sqhk.co/bukevexej/gejeNFz/amazon_prime_golf_rangefinder.pdfIn PDF document text
    • http://oneitstore.info/65556622960ecpvl.pdfIn PDF document text
    • http://pl50off.info/space_station_pinball_partsd29vc.pdfIn PDF document text
    • http://bestgirl69.com/composicion_de_las_capas_de_la_atmosferagcsuy.pdfIn PDF document text
    • https://zeruxukekojumu.weebly.com/uploads/1/3/5/3/135345771/4284298.pdfIn PDF document text
    • https://vokarojunez.weebly.com/uploads/1/3/2/6/132696330/0b911b89fb6fc2c.pdfIn PDF document text
    • http://repair-planshetov.ru/how_many_calories_are_in_a_bojangles_cajun_filet_biscuited3et.pdfIn PDF document text
    • https://rakiletapaleta.weebly.com/uploads/1/3/1/8/131856645/9299904.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/hgijjhY/hotels_near_the_stumble_inn_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/podizapexiv/ijOjeha/rivoniluwo.pdfIn PDF document text
    • http://solapp.xyz/joponujinovowexii7qb.pdfIn PDF document text
    • http://desofudexe.22web.org/bimal_kar_books.pdfIn PDF document text
    • https://cdn.sqhk.co/momebuman/4hcrDrA/final_fantasy_tactics_characters_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/hfKRjie/tikokodegaruvikuwowot.pdfIn PDF document text
    • https://forexegazujolo.weebly.com/uploads/1/3/4/1/134108883/fametirage.pdfIn PDF document text
    • https://cdn.sqhk.co/sunaxidida/G5Ageji/mevurewam.pdfIn PDF document text
    • http://monajip.iblogger.org/paferisifotavoxi.pdfIn PDF document text
    • http://edaruzal.xyz/what_ink_does_hp_envy_7100_used7qdz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipijiz.epizy.com/addition_coloring_worksheets_for_kindergarten.pdfIn PDF document text
    • http://kezatafoxab.epizy.com/build_my_life_housefires_sheet_music.pdfIn PDF document text
    • http://xofuzugavup.epizy.com/wogimuzunutogeziwet.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_off00018657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18657 5580 bytes
SHA-256: eaeb1a534b4494862e4179f86a34d731f417884854aac8e5dfb6bf524fd713a4
font_01_sfnt_off0001997a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1997A 10720 bytes
SHA-256: e2e541d1219b91eeb557bb30dff4b14df1072f448b0b52f6fa660559d68adcec

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