Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d94325f2f51dd7c…

MALICIOUS

PDF

74.5 KB Created: 2021-05-02 12:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 49a536461b35f17a761860eb7983b1b8 SHA-1: 80a775dee7bf76bb43ece7f06f04777f8c9e793f SHA-256: 2d94325f2f51dd7c9c23311e7d940746d52d6ae14bc360ba33dc5ae267e04d03
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Hayward pool heaters troubleshooting'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/strik?utm_term=hayward+pool+heaters+troubleshooting+lo PDF link annotation
    • https://kaxojolomo.weebly.com/uploads/1/3/4/8/134885197/nugivakij.pdfIn PDF document text
    • https://nazalufu.weebly.com/uploads/1/3/1/4/131409274/miwirejinibi.pdfIn PDF document text
    • https://zupevojug.weebly.com/uploads/1/3/0/7/130740492/868bf1e73952d83.pdfIn PDF document text
    • https://bogizironafek.weebly.com/uploads/1/3/1/4/131406395/6eb3b4f.pdfIn PDF document text
    • https://zejatuno.weebly.com/uploads/1/3/0/7/130776413/rixiral.pdfIn PDF document text
    • https://lalafifutarab.weebly.com/uploads/1/3/4/4/134444863/1efbf9140f8221a.pdfIn PDF document text
    • http://dorugesile.iblogger.org/nesozeza.pdfIn PDF document text
    • http://nizumewuminal.iblogger.org/coleman_battery_lantern_replacement_parts.pdfIn PDF document text
    • https://fezapatinegu.weebly.com/uploads/1/3/4/2/134266508/lotimotudor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jemadetuv.rf.gd/dobeketiriruvinugabodifi.pdfIn PDF document text
    • http://jeduvuvojupan.rf.gd/badiwuzetotesajagefufebu.pdfIn PDF document text
    • http://xalanijowule.rf.gd/download_tulisan_arab_asmaul_husna_dan_artinya.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/rawanatopo.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/critical_ops_hack_mod_apk.pdfIn PDF document text
    • http://vudadepaw.epizy.com/are_playstation_gold_headphones_bluetooth.pdfIn PDF document text
    • http://fakesux.epizy.com/mefokux.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/in_openoffice_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/c_b_strike_season_1.pdfIn PDF document text
    • http://dakezemafatelo.epizy.com/9796786730.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/51729887637.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/red_cross_first_aid_kit_contents.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/waleb.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/nebofu.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/ministry_of_india_2019_list.pdfIn PDF document text
    • http://depepok.rf.gd/cissp_sample_questions.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_off0000e613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE613 5516 bytes
SHA-256: 5ca2a0a30c6366abc6c3d7b754bf8bb5bcc01479e502e62edc28818f80b9b21c
font_01_sfnt_off0000f8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D8 10424 bytes
SHA-256: 8749fa9d491e5e11281d0bf2debae44d248c627443b0613598bb0f4d9b179214

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