Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cdfa7afb39d682…

MALICIOUS

PDF

83.8 KB Created: 2021-01-03 11:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 54703de475d6d6c4745da409e7b94fd2 SHA-1: 97f833cc11ff900d1648c35143a574cbdac6f0b7 SHA-256: 30cdfa7afb39d682592b889d2aeb041049e9fc94497aed3d1ee6a62212d5cee5
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://traffking.ru/wb?keyword=supersprint%20race%20exhaust'. This indicates the document's primary purpose is to lure the user to this external site. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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://traffking.ru/wb?keyword=supersprint%20race%20exhaust In PDF document text
    • https://cdn.sqhk.co/xumirikebixo/hf7Sgtp/89685368544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_5f8a763275a3a.pdfIn 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/ac422209-bb44-4405-8b50-af9d27848dd1/pogofifepif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4d0866-aeb6-4442-a688-af6fd5043a2a/jilefevidagawamujum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991fa0f5-4c03-4528-a6ce-607d5183ce00/legend_of_zelda_level_8_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c41ed4-79a7-4bb0-9e68-c1f832b816e1/dungeon_pixel_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7eb6c6-37f4-4459-8e82-63e0d56eefd8/domurujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f5d892-a7e3-46e3-9bb5-226c7e3421f1/disupimugojezajatonida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24c6fc6-0e61-4465-aa09-4add72515c33/15.3_applications_of_genetic_engineering_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64908056-8747-47c3-93c1-8ab1b83395f3/the_worlds_end_streaming_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/paxuzufipexudavax.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/depression_glass_value_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba9ccf0-915f-4f12-925f-67588a4dd079/south_park_temporada_19_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7550de40-5257-42db-9bf0-b057b42091d9/kiss_god_gave_rock_and_roll_to_you_chords.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_off0000fd16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD16 4932 bytes
SHA-256: 1eefd805e52b2f82de7f8b17cc3db61734d4c93508aa9d8956d371820ba8e781
font_01_sfnt_off00010dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC8 11384 bytes
SHA-256: 912adc1b1016d4d1e41a33cc375927c66a0b1279bb2186e4a0cfd16ab71106c2
font_02_sfnt_off0001347a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1347A 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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