Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c242721a4bf7b1…

MALICIOUS

PDF

67.8 KB Created: 2021-02-18 19:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3c6ea04d12a51f875a59c53c9406b7f9 SHA-1: 5900d6573b46856c85533ab9221c996468c6d9e9 SHA-256: e5c242721a4bf7b1f5d8dbefcba460e350b13ac24df0bc43ea561a8db22a999b
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to '1997 nissan pathfinder manual' and is associated with an external URI pointing to 'https://leonvi.ru/wix?keyword=1997+nissan+pathfinder+manual'. This suggests a phishing or social engineering attack, likely using the lure of a vehicle manual to entice users to visit the malicious URL.

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://leonvi.ru/wix?keyword=1997+nissan+pathfinder+manual PDF link annotation
    • http://khanapoorti.com/60892815290ff37c.pdfIn PDF document text
    • http://lodorobirat.22web.org/gixoxebepenanarusitab.pdfIn PDF document text
    • http://bezigex.iblogger.org/xerixeniz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377704/normal_600592524885d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5ffa4e016e9a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_601e65f8a9ba3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fe5c491cde16.pdfIn PDF document text
    • http://takovod.66ghz.com/informal_email_writing_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388407/normal_5fc888ca61559.pdfIn PDF document text
    • http://nesobaka7.xyz/bardo_pond_amanitaugeyq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475212/normal_5fe2a207532d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377407/normal_5ffab56f96476.pdfIn PDF document text
    • http://topvideo.design/nikebifokefegajisaba677ie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420432/normal_5fdc2e4a4baa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_601a5332ac9f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418777/normal_5ffb0cff711fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wazamogonobovox.epizy.com/bbva_bancomer_app_android.pdfIn PDF document text
    • http://denuvadejo.rf.gd/lego_cad_models.pdfIn PDF document text
    • http://rogokumopukizu.epizy.com/jaregipobowevukixepipiba.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_off0000ce97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE97 5472 bytes
SHA-256: 07d9edb2a6aba4378913b4c709b87fc242c060078b7a48b0632633b3e6d6b079
font_01_sfnt_off0000e112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE112 9660 bytes
SHA-256: 09cbf5c73d6033406d3cca0968d4b6f1d967190c8ffad21c2b09292ad4e6ead2

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