Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb114dbca687e6cf…

MALICIOUS

PDF

66.3 KB Created: 2021-02-13 09:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3422a993cddf23d0cd36600400f571b SHA-1: 45e22fd85d9e420ba603df35dc322ef560f9844b SHA-256: bb114dbca687e6cff9c53a8400b5cd505d5825235e30eafcabdf1aa8787cc1d0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/wb?keyword=punjabi%20dance%20video%20songs%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426416/normal_5fc849a7a157a.pdfIn PDF document text
    • https://gojojiwegojefuw.weebly.com/uploads/1/3/2/6/132695574/3894127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5fe87d8af078e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5ff5538dd896f.pdfIn PDF document text
    • https://fowidejufato.weebly.com/uploads/1/3/4/5/134582967/sezugimibupakak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447087/normal_5fd7f9af5536f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445736/normal_5ffc9170cc064.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472488/normal_5fc5920a0fdd3.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/duzexefemosaxe/jackson_hole_wyoming_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/facebook_reports_for_clients.pdfIn PDF document text
    • http://kalapifupedafog.epizy.com/33128548204.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/present_continuous_tense_in_spanish_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/az-_300_exam_questions.pdfIn PDF document text
    • http://magajavopisili.epizy.com/preterite_tense_spanish_worksheet_answers.pdfIn PDF document text
    • http://xiwagopa.epizy.com/buwatigagudafubugubib.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_off0000c7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F8 5436 bytes
SHA-256: 7bd9bfca448dbd43eaf05075b31323c29a61dc43d7c26ca177c6de663229d172
font_01_sfnt_off0000da92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA92 9960 bytes
SHA-256: a6161d161830bc382f278f867ef0044841b67c5768985b6e34f6952b49a47b8e