Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce07e3c7d60eaac…

MALICIOUS

PDF

71.2 KB Created: 2020-11-18 13:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 960ebc735ac3266759f5b729e04e1d6b SHA-1: 6c57f90b030cbf4306927494fd284b1a960a0368 SHA-256: 9ce07e3c7d60eaacc053be286a4a277926c8816728f2ae2c2a7bf2bd44960ac6
170 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a link to a known malicious redirector, traffking.ru, which is likely used to deliver a phishing page or a second-stage payload. The presence of urgency and download button lures further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/123?utm_term=lexington+fayette+county+public+schools+calendar In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374852/normal_5f90fe06c6ff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5faac2c2bf54a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_5fadacb95f6c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb9b56e-13a2-4a51-8825-3148eb8cb026/fatut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5acd055-93d9-4185-b6eb-bd74fe1b2fa5/wixozaxojubixosikoso.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/63471241972.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/free_commercial_lease_agreement_short_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f77b097-876f-4600-96ad-225d5f655886/41902144060.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxibipan/kixifedaviwolokubo.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/zomokofugafefu.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/simaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/university_of_michigan_physics.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_off0000d8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FD 5668 bytes
SHA-256: bfe88a13a637fd59cf2b2b7317082a6e39e554ac7823e073884e96acd2f4c44e
font_01_sfnt_off0000ec4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4D 10328 bytes
SHA-256: 47ff7165e864c2b6d91123808b61d7131c228ad534484409bddca5ef0e50db30

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