Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a6f3a1b7dd154d…

MALICIOUS

PDF

96.0 KB Created: 2020-12-16 04:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c33cb410c9168ccbc65fd34edc765f27 SHA-1: bb807abd8b7b905f43ba8ba8552a9714a9d0261d SHA-256: d9a6f3a1b7dd154dafcbe61c21921343c72d4232689f5b668d2863a90f05777d
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 0.9997

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=die+dreigroschenoper+zusammenfassung In PDF document text
    • https://bowogemiris.weebly.com/uploads/1/3/4/3/134316512/2a361.pdfIn 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/55af4d84-f189-4aa9-a6f7-d1999cb2a5ad/vimarupiwibakalomudufer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5f7b29-69b4-49ee-b14b-2ab3b4547a68/mary_and_joseph_song_lyrics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc593df27a199023ad5232a/t/5fcef911cd9a2056ff6ba11d/1607399699023/zubadapusaraxigerepok.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcefd143d778404109110a2/t/5fd64dd4164d0f203c784b26/1607880153196/summertime_full_movie_free_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef784ba7-5f62-451f-80b1-f945b39e25cf/lewis_diagram_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07be4114-0c60-403f-9ae4-d7e160a9c509/5489335429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/986c874e-fd7a-44c6-aca6-a0d62e0f33f9/vifutapanibimurodanekaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54079ea4a794d5661c0f1/t/5fc76b85c953717e09d8e9fc/1606904720352/44027017261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da72fcf6-ee09-4ed6-a114-a0b97142eb36/zulenerope.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/losobotolemixalilesuge.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/70563903918.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_off00013329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13329 5584 bytes
SHA-256: 7447319a3999e48ff490872d94b24921a4031acba9aa97d9ef6b42305aab364f
font_01_sfnt_off00014611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14611 14160 bytes
SHA-256: 30e32d3c0883b7a30d59634fe22a6e7205e24928106a988c2da8df1036bae87b

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