Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e7e645e0bb4155…

MALICIOUS

PDF

61.6 KB Created: 2020-12-19 19:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1f7156c5c96f7ad3566a00aa22711569 SHA-1: 67520ae2864531e6298809ec90452593f02a5c72 SHA-256: 69e7e645e0bb415526f394c13b76096ac46f156a27b1b7953713068a31fb3940
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffking.ru/strik?utm_term=student+worksheet+to+accompany+the+lorax+answer+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474997/normal_5fa984ef40a95.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/nilititonawafim/new_hanover_county_school_lunch_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/android_fragmenttransaction_add.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/list_of_helping_verbs_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46ee8e0-4028-4b45-a8af-dc120ca8c6e9/xepovonarovis.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/12224703121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cddf44d-b7ab-4b8f-bdf2-d583183cf0e3/ark_survival_evolved_nude_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b534456b-628d-4297-85e2-fc0dbd22448b/85131743569.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/59975233379.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/jovotodolinowap.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/32005120817.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/39072547453.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_off0000b45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB45E 5740 bytes
SHA-256: 5d62c68f594f9f7954b9401c7c117187ddd39839fc67bb17f51bfb454a54f311
font_01_sfnt_off0000c7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E1 9688 bytes
SHA-256: 964e11734d7058ac0eb24a99f7a49e94383e43980e43fc231852f54184a932f1

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