Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e09c9d82f7bf6b…

MALICIOUS

PDF

62.3 KB Created: 2021-01-03 06:24:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9dceb7fc6e200ce5ec0d8df07d52f361 SHA-1: 7d0e0c33926bbc8e5076251b6ea317d641681178 SHA-256: 84e09c9d82f7bf6bf260f41874d6186ea270855f4ad05868fb9fb0e385821a3e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is associated with phishing and malware distribution. The embedded content suggests a lure related to a 'broken screen prank phone app'. ClamAV also detected this file as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and malicious link indicate an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=broken%20screen%20prank%20phone%20app In PDF document text
    • https://cdn.sqhk.co/sigidezok/U8hchdw/zivig.pdfIn PDF document text
    • https://cdn.sqhk.co/tudakesovif/RhhxAhe/mcdonald_s_breakfast_menu_calories.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_5faaaec5813d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447903/normal_5fd912f08ef16.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/nokiwovowus/unit_6_vocabulary_answers_level_b.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/importance_of_incident_reporting_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f5dbc9c-3b2a-459a-908d-a713c3936fcd/9472540517.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/dokob.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/30346063172.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/vakutezogawuzuxepagevi.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/xejop.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/possessive_pronoun_worksheet_2nd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/cynthia_morgan_in_love_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf70352b-6889-4930-a817-5507622524ca/mopojuzoromebesalen.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_off0000ba81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA81 5100 bytes
SHA-256: 461bd5bbed2eb892a6e3a82f0590c46cd51834faf462eb0e5c850e306c9920ec
font_01_sfnt_off0000cbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD8 9568 bytes
SHA-256: 77acbcd3e5784a5895e1f872a19147963e3a2a99ec7709228d6fce336be4c5b8

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