Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2a43b9a222a264…

MALICIOUS

PDF

76.1 KB Created: 2021-03-01 15:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 798dd4386ec0b29ea39336f1f1303672 SHA-1: 6b01b2eed1cab1a60d3cf334b76cb08065a4bf6f SHA-256: 7f2a43b9a222a264118400e2a68623098fdd785b980b779c97747972717cbadc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely as part of a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query.

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
  • 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://dugedepap.ru/award?keyword=what+is+thorndike+theory+of+learning PDF link annotation
    • http://899themes-demo.ru/todejemasot54zmc.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/15369072719i7iy5.pdfIn PDF document text
    • http://pressit.fun/158297696876r8l3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_6035605870c28.pdfIn PDF document text
    • http://usesoda.pro/chantix_dosing_informationxedly.pdfIn PDF document text
    • http://rezltml.xyz/sidumolumalq4dge.pdfIn PDF document text
    • http://my-credit.info/ponemixuxamj4gq.pdfIn PDF document text
    • http://viwimewi.22web.org/jivisedutomedik.pdfIn PDF document text
    • http://gordei2d.com/arpan_movie_720p4zsm3.pdfIn PDF document text
    • http://job-finder.space/insider_guides_inc64j6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiwutixukunow.epizy.com/rewusatexavixorumuride.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/impossible_quiz_answer_29.pdfIn PDF document text
    • http://faxumev.epizy.com/bigo_live_diamond_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/lelifogupafaligab.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/lista_de_canales_totalplay.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/29637273255.pdfIn PDF document text
    • http://dadojusox.epizy.com/alphabet_international_aviation.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_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 5348 bytes
SHA-256: 665324393365f9e4b32ba208c671da1fb3e3d0d667bf67f54353607339494caf
font_01_sfnt_off0000fa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA46 12724 bytes
SHA-256: 175ea95bb6b4b27b7ce51974c655f793299b95dba866fe641d9dd06d6b21eff7