Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76ff021860120c5…

MALICIOUS

PDF

69.9 KB Created: 2020-12-15 04:56:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e5fd49979794b63fbcccc3cbfa6858d1 SHA-1: 305bee4244e092a4fff1e04c21c3c8b5496d2c9c SHA-256: e76ff021860120c57aa61cdb5aa84aa1b7117cf93d9b2b3d99d116b8b84d7168
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=7-aad+excitation+emission'. The ML classifier also flagged this PDF with a high score, and ClamAV detected it as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt, aligning with Spearphishing Attachment.

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
  • 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://cctraff.ru/123?utm_term=7-aad+excitation+emission In PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/vavoliguk_veruwuratajefib_xumabomogif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_5f94e57c3001a.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/mepizuselogaler_jofejekiboj_fixuwivuz_fixage.pdfIn PDF document text
    • https://lipijunozawisek.weebly.com/uploads/1/3/4/7/134721324/c0f3a6ad24f.pdfIn PDF document text
    • https://xutetuzaxudekit.weebly.com/uploads/1/3/4/3/134371691/febobosubigamitimi.pdfIn PDF document text
    • https://sofivowipaduru.weebly.com/uploads/1/3/4/4/134454637/1223074.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/piradi/gesavotanagivadobupiso.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dc532e34347c7043ce2c/t/5fc19d95173fb5383bdfbbbe/1606524310126/compex_sport_elite_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67ab56b97992eb581d6b2/t/5fcea294283e883171f4f4c2/1607377557622/street_of_rage_2_game_genie_codes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfeb102bbd74065800e14d/t/5fc2254f61e25426e1809f34/1606559056356/zovebigisujosorigoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8bb0f2a-77af-4420-a44b-ba62a8116696/usb_to_parallel_driver_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/pabos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d2cadf132613bbd6bc3a/t/5fcdd2a8c836a917f92e6a3f/1607324329070/bus_simulator_2015_apkpure_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1df94509-5be8-41a1-85b7-9b26a1f4a556/wiwefatixoma.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ebd09955c744b53ba8af/t/5fc47a336457125654cb6807/1606711859403/tofaxezurelij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5768fc6229360eccbb460/t/5fcf6d5505f6f278075a424c/1607429462529/38039145767.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f2f6c89e1c4b8fbea157/t/5fc2e6d33570fb44d1635d47/1606608595884/16176293165.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_off0000d666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD666 5040 bytes
SHA-256: 2296eb009ce2c33bc928e5e7cfc6c898ba2163beeb3cc35db2fa88db104fd9f2
font_01_sfnt_off0000e78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78A 10484 bytes
SHA-256: e2fa38a1af49597bf20d8c43bec0d318f44aab977da0642a2dbb21f53d9288de

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