Malicious PDF — malware analysis report

Static analysis result for SHA-256 af704805607f7be6…

MALICIOUS

PDF

71.2 KB Created: 2021-02-12 19:28:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 522a59ee610f61b0a4f04566a734c29c SHA-1: 37feb0af24703be8d77c86b6fd746168c334bb22 SHA-256: af704805607f7be6acfc248c1bc180fbaf5e00648dac0c52668b3c039b13c17a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The document body, though partially garbled, suggests a lure related to 'Cidco full form', indicating a likely phishing or scam attempt. The presence of external URIs and the ML detection strongly suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wb?keyword=cidco%20full%20form PDF link annotation
    • http://mumiwimag.iblogger.org/45727425907.pdfIn PDF document text
    • http://bedojipekasel.22web.org/67702178459.pdfIn PDF document text
    • http://vufilulojusabid.iblogger.org/boogie_woogie_dance_videos.pdfIn PDF document text
    • http://woxagaxizi.22web.org/wifulejiwazevalo.pdfIn PDF document text
    • http://bilet-pdd.site/unknown_bacteria_lab_report_microbiologyp7wzi.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/Jjahgfi/gold_and_silver_prices_today.pdfIn PDF document text
    • http://qwert-ita.fun/macbeth_act_3_scene_guide_quizletjxanv.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/15336279420gpgse.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/cDso5RN/salabewe.pdfIn PDF document text
    • http://hookup754.fun/428704074735cx2n.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/g2xjdja/nepasemanigabuwixupa.pdfIn PDF document text
    • http://cleanup-sale.site/tuditabuxiwofedu2d6hj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bepukuba/angsana_new_font_mac.pdfIn PDF document text
    • http://dujojovixotik.epizy.com/sejudovejorepobu.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/definicion_de_poblacion_autores.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/73671234992.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/44031920686.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/excel_2016_merge_data_from_multiple_sheets.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/71556904962.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_off0000d8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A6 4684 bytes
SHA-256: df8583d7ca97e4f67d89c06322f29c8c935de45b7ac95addf76cde321e309e81
font_01_sfnt_off0000e877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 11328 bytes
SHA-256: a44cc3ff09e30f0d0036333388a537a1063ef570b1c80abc9346f5847b17ff91

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