Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c0b6a5a66d42e2…

MALICIOUS

PDF

91.8 KB Created: 2021-01-08 15:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0450f931e7843c5e07d19d7e1b2a190b SHA-1: 743ab9463aa8b9c2d1d0ac3df11f6581cece0856 SHA-256: 01c0b6a5a66d42e24d3b8992fe57d8430082cba47e1f6e41e4a6832b0f3b15f1
162 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://ggtraff.ru/aws?utm_term=cheat+sheet+html5'. Additionally, ClamAV detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The ML classifier also flagged it with a high probability of being malicious. The presence of embedded URLs and the nature of the redirector suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://ggtraff.ru/aws?utm_term=cheat+sheet+html5 In PDF document text
    • https://cdn.sqhk.co/bepemuno/Rc3Pial/walking_dead_no_man_s_land_radio_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/hdig3ih/internet_speed_meter_lite_apk_old_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417653/normal_5f9f0b885c742.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/devuxuzejozam/aye_axemen_orientation_book.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/astm_a193_b7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6e5b0d-d4cf-4ed8-b046-96a4f39bac3f/75105855061.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/air_pollution_modeling_and_its_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/711b13fa-9e0a-417f-8402-8b19a0d39459/jezopinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0225d77e-7798-4b94-aeb6-ebca967a6b2c/vimawugoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c2137ff-4948-45b7-9197-1351ed5cc190/db2_error_sqlcode-206_sqlstate42703.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/75600494882.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/vofulilik.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/subject_verb_agreement_practice_worksheets_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f0d5ae-e7ac-48e7-b03d-1d0e412a563e/12156962907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba4b458-dca1-4e30-8af2-35de78013702/65248212795.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/poraxopinigalumolo.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_off00011d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D71 3188 bytes
SHA-256: 085bf21032e519374e031c685de5f2c2e6498c587006a25c2e87751fffaae10e
font_01_sfnt_off000128c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C0 4856 bytes
SHA-256: b3d092228c395606d27618923695fcc1be8648bb39e1fc013de02bb3739a6ace
font_02_sfnt_off0001391e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1391E 11996 bytes
SHA-256: 1894cc5bfad3d3d2896097149d5dcf61ccf24ad11b99f43d7b25439394d696f2

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