Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bf353f20b0a37a…

MALICIOUS

PDF

66.1 KB Created: 2020-11-11 06:03:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 98a7619a8c73d24a9a49ec0320c22218 SHA-1: 7d52bbfca4d517ce5e8b96c19ebbfabf26ab4c8f SHA-256: 92bf353f20b0a37a4bbd2dcf3a7dcbdd2740e866e8e6ffeb4b2b8631776d2235
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and ClamAV detection. The embedded URL is designed to appear as a Minecraft code generator, likely as a lure to entice users to click. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

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://cctraff.ru/aws?keyword=minecraft+code+generator+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f9d6ade87c33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382960/normal_5f8fe40759bbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450513/normal_5fa0929f36d3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427783/normal_5fa6ea4039bfe.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/vonusirukete/52241230208.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/nexadovumiwunenezono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a2cb213-8abb-437b-bcb9-4de883bdfd7d/92165449990.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/critical_lens_definition_literature.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/arris_sbg6782-ac_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7114f769-ba8d-4188-95de-c1208523291c/79037910762.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/99185918989.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/zapugimamugagugifel.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_off0000c771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC771 4984 bytes
SHA-256: 5d1c2fcf7f5c461630120759795b7e6f5f1369c862dc7793c94b7e4cbae46878
font_01_sfnt_off0000d884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD884 10436 bytes
SHA-256: fb1ae1c742f10e1c5d985cd037c41c8247f92f1dfbf18cbd397632858c12eddb