Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0d0376bf372e20…

MALICIOUS

PDF

77.9 KB Created: 2021-03-23 17:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 54fe04a22bccb7d6b21990f1034f582c SHA-1: 9fb21863336657f18d9254cbf993950de1e1b717 SHA-256: de0d0376bf372e201e4b9d0aebb1777613b822de90dfe753dccdc45ca576b5fc
156 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 0.9991

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://midufefew.ru/wix?keyword=porsche+944+for+sale+on+craigslist+florida PDF link annotation
    • https://zodekunomaxuj.weebly.com/uploads/1/3/0/7/130739112/1816614.pdfIn PDF document text
    • https://vewiwuxipax.weebly.com/uploads/1/3/2/6/132681682/sexifeporem_gamawapune.pdfIn PDF document text
    • https://kaxokotul.weebly.com/uploads/1/3/4/3/134380066/sezunofikelino-sitedobizal-biwum.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/sorogamat/sigolomamoj.pdfIn PDF document text
    • http://xisapedugifado.epizy.com/how_to_use_the_h20_mop_x5.pdfIn PDF document text
    • http://sisawujeza.rf.gd/twas_the_night_before_christmas_goodreads.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/messenger_apk_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/nokixasirera.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/73023659402.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/progressive_era_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/gujizupidozapakoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa0bba28-98ca-457c-83c1-3199993a7f71/pejuzako.pdfIn PDF document text
    • http://rejefuwozumij.rf.gd/88718466604.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/dunuvokawebigekirerenuvor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b2be19-8cc9-4dc6-8d33-6e7f836ebd8c/photo_text_on_photos_download.pdfIn PDF document text
    • http://bizitezejeg.epizy.com/focusrite_scarlett_solo_3rd_gen_2i2.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/80014507473.pdfIn PDF document text
    • http://razafif.epizy.com/zobuwobuxefatosiludemaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc08e7a-71da-4457-bcc4-e73f5f6f98f7/thug_kitchen_cookbook_ebay.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/wokeba.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/coming_out_on_top_guide_alex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1abfc271-ac36-4ed3-af00-ec806fac6575/juvenet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53fdbcf-9f17-43f4-8b80-5cecc453ba35/fallout_4_bobblehead_list_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/ludedori.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_off0000efba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBA 5528 bytes
SHA-256: a292a5514801a986f52531f58862c9e475e1a77daa3dab3113b2fc0c3fd81b6f
font_01_sfnt_off00010280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 12056 bytes
SHA-256: 5c76818cdc6ebf7c896bed9e617b50b94c5a12e29e2b2a869d6aeb9b51534b34

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