Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fb5569539a7399…

MALICIOUS

PDF

64.7 KB Created: 2020-11-26 07:58:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 45877cec4acc9e60a29c321c728b7e73 SHA-1: b916fbc0c945ca510def2726f66fdfe14798f5c9 SHA-256: 88fb5569539a73993c31e10975a20d2b22c92653a1e25840ff577e576eb5d0fa
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?utm_term=manantial+de+vida+medical+center In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/503dfb29-ce2e-4d92-a3ae-33410371c9c8/39973603350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8acffc97-db33-45fd-a08b-a0b16aa2253d/49598592652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15149d46-84f1-456e-b3c9-d687024b281a/xanixirivawobudefapid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdd5d263-c31b-41de-92a8-14ec4db6856b/5441411595.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/a7_envelope_indesign_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa4df83-a486-4399-ba2d-052744dc0f6e/topol.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/math_worksheets_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b91306fc-207b-4324-8fb9-728d1596aa88/take_back_the_night_lyrics_justin.pdfIn PDF document text
    • https://s3.amazonaws.com/welutizenop/34629280969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903fb634-8730-44d9-883d-631544758a5a/puvegoguwan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f0e5b7-6234-48fd-a4cf-f9c47eddc3e3/wufugemumejubizetefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a400d79a-0bc1-4b94-96d2-903a4cc722aa/metaphors_in_fahrenheit_451_part_3_with_page_numbers.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_off0000bc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC21 4972 bytes
SHA-256: 85c0494e94e96b90aa3cdbe1ab38dbc698604ff9c9506d8c3a7a8aec0c6462bd
font_01_sfnt_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 12540 bytes
SHA-256: 2b5eb9729dc727b76bb0bb873b362e274b06321fb9414602a6be4d275be5e7ad

Open this report in the interactive analyzer, or submit your own file for analysis.