Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed73faa370ddbc1f…

MALICIOUS

PDF

76.1 KB Created: 2021-03-30 01:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 31f96ae420057097931994ebbb13e96f SHA-1: 8bc1421142558da090ef88c74055c9bd04da9294 SHA-256: ed73faa370ddbc1fbd9843ca0f80e09023f0a862bf97a4daec9c61185cef56c8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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://leonvi.ru/123?utm_term=foxit+reader+portable+italiano PDF link annotation
    • https://xikipavukageza.weebly.com/uploads/1/3/0/7/130776529/fodox-bagavipubu-jodupav.pdfIn PDF document text
    • https://xogaketur.weebly.com/uploads/1/3/4/5/134593565/c5adb3.pdfIn PDF document text
    • https://cdn.sqhk.co/xojafimib/4jcptif/fakapisofixip.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/editor_text.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/jdgjDge/mmx_hill_dash_2_apk_mod_download.pdfIn PDF document text
    • http://converstarget.ru/how_to_create_a_timesheet_for_workhs2c3.pdfIn PDF document text
    • http://azorocheat1.xyz/rapadadawapitjrm9f.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/h5KZghV/princess_dress_up_games_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_6014ed02e0c78.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/fefuzojofufu.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/t88higg/taco_mini_bike_frame_for_sale.pdfIn PDF document text
    • http://puwinowelin.medianewsonline.com/al_quran_bangla_darussalam.pdfIn PDF document text
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/wogabutadomivik-givuzal-febebo-xonogize.pdfIn PDF document text
    • https://zunurevupuvofas.weebly.com/uploads/1/3/1/4/131438471/xexapiwotusidufaluz.pdfIn PDF document text
    • http://laithub.pro/balupaginovuxizatirojewh1dzv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fd2346b979a4.pdfIn PDF document text
    • http://shoes-storie.club/geoffrey_broadbent_design_methods_in_architecturel9g2p.pdfIn PDF document text
    • http://manibupefif.mypressonline.com/69376800730.pdfIn PDF document text
    • http://fonivoguko.medianewsonline.com/xiler.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/pdf_to_word_online_free_ocr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_600fce4e6a03a.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/wagekane.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofunadex.myartsonline.com/8621857236.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_off0000e05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05C 4936 bytes
SHA-256: da8f9073c9df74a6019d7bf47c231f8336b0eeb4dc6c562c039e69a60b170562
font_01_sfnt_off0000f133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF133 21904 bytes
SHA-256: 58218d9cc2d356f2d7c8686820546e26e8cb568d3efd2837409074e6fa675f53

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