Malicious PDF — malware analysis report

Static analysis result for SHA-256 c747011c468da803…

MALICIOUS

PDF

88.5 KB Created: 2020-12-10 18:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4afa9b0e9ec30656da603cea457d8348 SHA-1: 2276fc09a9185f2d0c9bc609a538f5685e0c66f2 SHA-256: c747011c468da803fcb5c77ab3827eec560bf6e2aaba2352925c3149dba527c7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by multiple heuristics, including a critical finding for a malicious redirector link. The ML classifier also strongly indicated maliciousness. The embedded URL, https://ggtraff.ru/wb?keyword=profile%20page%20template, is the primary indicator of compromise, suggesting the document's purpose is to lure the user to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://ggtraff.ru/wb?keyword=profile%20page%20template In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bea2ee46-e89b-4c04-b754-3136df22506a/fishing_guide_f2p_osrs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc528f2abaecd33183df1a5/t/5fcd460ba87f9f1b19e6f373/1607288332247/33436442035.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a6fe40f1034a5cc946f7/t/5fc66473fa04221c71fb1537/1606837364284/burger_king_menu_prices_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3abe4d71-4f2e-4fc4-a163-e8d5f6169024/sat_math_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ed4b49-9252-44e4-8f28-80d651237387/68371343741.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/exponent_power_rule_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ff8a7d0c8f249d5b3222/t/5fce27245177ea328cebcdb9/1607345956606/xijenota.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffc42bda9c57a97b92422/t/5fc241c93c6ccf69f3a84eb4/1606566346158/xufezapunazar.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/red_bull_brand_equity.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf9f8b7ee8e70759e5896/1606220281110/what_happened_to_sam_witwicky_and_mikaela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d40e76bf-34c7-4990-a042-6dddc14cb0c6/pagumexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16208d7e-0424-48ab-9409-d69a3916bac1/gololikuwadesunoguwatufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b14cd8c8-5314-4827-b4a2-5f5ab25373df/90235433768.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DB 4728 bytes
SHA-256: 86c79c8308e834e5883ac684227076a164a112597cf47d8610a49445afe8cb8f
font_01_sfnt_off000121eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121EB 10808 bytes
SHA-256: a2d5d76aeeb0842118597c6311dbdbe142ef74da8162d118beecf0ed51ddce3d
font_02_sfnt_off000146ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146FF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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