Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f52cb99b5a83f8…

MALICIOUS

PDF

67.9 KB Created: 2021-01-22 02:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8a344cb64cda6f7d89961764c5cf29ba SHA-1: 53d6588500df38375b22b572e16ba34519b5cb38 SHA-256: f7f52cb99b5a83f86b20edd3bb60b234f37090dddda89dccdebef6e7fb9e848b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=coraline+jones+tim+burton', which is likely a phishing lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URIs indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffset.ru/123?utm_term=coraline+jones+tim+burton PDF link annotation
    • https://site-1175229.mozfiles.com/files/1175229/cetane_number_diesel_fuel.pdfIn PDF document text
    • https://site-1168299.mozfiles.com/files/1168299/30110155661.pdfIn PDF document text
    • https://site-1216774.mozfiles.com/files/1216774/66709087451.pdfIn PDF document text
    • https://site-1173140.mozfiles.com/files/1173140/nwsl_soccer_league.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/jfV2AHy/photo_finish_horse_racing_mod_apk_download.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/sugosubexez/dozekoguko.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/w3schools_templates_ecommerce.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/46422146197.pdfIn PDF document text
    • http://nabapuxamiluj.epizy.com/dutodofebovesinoxokal.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/74680787403.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/google_chrome_apps_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/sazeveresewemavurap.pdfIn PDF document text
    • http://sosefamip.epizy.com/97661967.pdfIn PDF document text
    • http://vekoxoke.epizy.com/little_golden_books_value_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/twitch_streaming_apps_for_android.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_off0000ccb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB1 4952 bytes
SHA-256: 38897aebe59546e25d885492993b5a30a209bc278dc19fe7712a4c11071b5309
font_01_sfnt_off0000dd6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6D 10404 bytes
SHA-256: d9e700ae5addd2da3d2f9ce9b7d03eb50bf1555bf1afc9adb3b1f07eae5820ed

Open this report in the interactive analyzer, or submit your own file for analysis.