Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab64a32b65b14894…

MALICIOUS

PDF

78.6 KB Created: 2021-03-20 13:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 15fcd9f3aee24e35fec7e929ca311d7f SHA-1: 0d5e56ab30b1447deabbdc0267c728a5eeb29346 SHA-256: ab64a32b65b14894cf894ef068a2c1d145146c4c33aaf3d7640c331bb0d69a16
154 Risk Score

Malware Insights

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

The PDF contains a malicious link disguised as installation instructions for Garmin software, which is a common phishing lure. The link redirects to a known malicious domain, and ClamAV also flagged the file as a phishing trojan. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/strik?utm_term=how+to+install+garmin+echomap+uhd+93sv In PDF document text
    • https://cdn.sqhk.co/wazikunal/bvih7Gz/pirate_art_projects_for_toddlers.pdfIn PDF document text
    • http://cafe-cok.ru/380647799591uedh.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/metric_conversion_ladder_worksheetfwl5k.pdfIn PDF document text
    • http://ctyr.ru/duwikilahwdfc.pdfIn PDF document text
    • http://pop-marketplace.ru/bloons_monkey_city_vortex_strategyup85d.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/iljbhj6/tifevusepen.pdfIn PDF document text
    • http://kolamudeluxom.iblogger.org/calibration_curve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujopafupo.epizy.com/61778296408.pdfIn PDF document text
    • http://bixasejefo.rf.gd/developing_the_leader_within_you_book_report.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/bible_kjv_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/labels_template_free_word.pdfIn PDF document text
    • http://xifisukupiza.epizy.com/the_queens_code_by_alison_armstrong.pdfIn PDF document text
    • http://zunukaxoke.rf.gd/44481755592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a862a9f2-73c1-4cf6-996d-60b3e266bcbd/26589608690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e0018b5-bc3b-4bff-ba77-5e63b78944b8/53773819542.pdfIn PDF document text
    • http://sobilekob.epizy.com/95241409962.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/cracking_the_pm_interview_filetype.pdfIn PDF document text
    • http://niguwez.epizy.com/42581169389.pdfIn PDF document text
    • http://vaxokepa.rf.gd/16412657895.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/warcraft_3_full_game_blizzard.pdfIn PDF document text
    • http://sosunakefimafo.rf.gd/40845665842.pdfIn PDF document text
    • http://lotirejotan.rf.gd/degaborixowurajuwuwesujul.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/aqw_class_guide.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_off0000f31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31A 5920 bytes
SHA-256: 438a2e7f3455dccfb3b9fd342e2b9687785050bbc15e3cec4863ce79157b2074
font_01_sfnt_off0001072a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072A 10472 bytes
SHA-256: 7ad7a820ccd3a2aa33e994416875773c342118315acc6e3aecd23a4e04e2ac81

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