Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb82a605c05e3f45…

MALICIOUS

PDF

71.1 KB Created: 2020-12-07 23:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c787cb42a552d74ff0cb75437aa7962b SHA-1: d3f3863bfac642061cc9d5f499c4e8d18cb3a8bc SHA-256: eb82a605c05e3f4543cfa74eb21edc6b271dc7f8172b3026c70f981bd45fa9b1
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=baker+elementary+school+supply+list In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/tony_asher_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/concept_sheet_architecture_ideas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aae6f7cf8c7540363e08/t/5fc742cf56cd4459b3b53fcc/1606894288377/download_cocomelon_nursery_rhymes_videos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa0064be903ae6401353/1606220291430/53329336433.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/palmistry_book_in_urdu_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad67433-c37d-461a-9872-5fe62669d3c1/distinguer_droite_et_segment_ce1.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/savuwopesopunon.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/viewmypaycheck_2_login.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/duwiliran.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5104c9698b02c7f3b6a9a/t/5fca0d5852b5874c8596fcfc/1607077217422/fonib.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/unblocked_games_bullet_force_6969.pdfIn PDF document text
    • https://s3.amazonaws.com/tabagelufazafew/how_to_make_trollheim_teleport_tabs_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/basics_of_computer_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/fovejujajuxo.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_off0000d753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD753 5388 bytes
SHA-256: 34db9ac55c5df64f01c3e29bbd7796e218c6277703c11af807de476c466a802d
font_01_sfnt_off0000e98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98B 11096 bytes
SHA-256: f0a77c56eb56f9b93a7377caf788981b7491532ddb8dbce541ae2bee85acce63

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