Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ab622bb8393856…

MALICIOUS

PDF

76.3 KB Created: 2021-03-07 18:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d63b31ec54cc4c0e5bc6e1c654efc0ea SHA-1: 9ce392ed9cb2925dbb3a3cb99a2c903910b22009 SHA-256: 64ab622bb839385686ae95e77ceff02cb5f478818c17b807c0fa77707b1bd138
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating it likely serves as a phishing or redirector lure. The presence of numerous embedded links, including one pointing to known malicious infrastructure, strongly suggests an attempt to direct users to harmful websites. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://yafferge.ru/award?keyword=was+david+a+king In PDF document text
    • https://static.s123-cdn-static.com/uploads/4426425/normal_5fdea77e88742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416154/normal_60335261b8a48.pdfIn PDF document text
    • http://help-mediasupport.com/delokogihqqf6.pdfIn PDF document text
    • http://kartaidatodemeleri.com/17577291715sp8am.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410702/normal_5fccaad3cd33e.pdfIn PDF document text
    • http://ellmax-site.xyz/pazofupisinukiwowobthto.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe3ac3c12b49.pdfIn PDF document text
    • http://mylevel.store/fluke_dtx_1800_user_manualbk8ym.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417997/normal_5fff0132304c4.pdfIn PDF document text
    • http://pelistens.xyz/the_essential_epicurus_epubbrjgq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_60405ab936108.pdfIn PDF document text
    • http://instapodarok365.site/672537465832fahy.pdfIn PDF document text
    • http://yarrebitteh.online/xagedakaribilaggiw3v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fe18ef9cfe9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5ffff8d844c4e.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/ff6ddbb3-6560-495d-9d0a-0bf79a44fb23/9104893699.pdfIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_94630afe29fe4a1da76f58ee87bf8ee8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/075b35a5-b002-4441-8ef1-747cd043a9d3/zuvijokutonunanokitetuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e936dd-3fc2-44c4-b4e2-fa3bf8b97dc0/do_heaters_have_pilot_lights.pdfIn PDF document text
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_8a26ba52df9b4713be881bd0278cc92f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fe1206b-6e84-4df5-af2d-805970d8ae57/microbiology_made_ridiculously_simple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8f41f5-603c-4ae5-887f-aef9efa12546/36942642638.pdfIn 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_off0000f9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AD 5004 bytes
SHA-256: 2db5a637b97ee390bb11a6de737a60974beceedb5e6606d82c1a9f5a1ee6123b
font_01_sfnt_off00010ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE1 10752 bytes
SHA-256: d0b41b5189978cbc20c2546753fda508f37965df4a325eb5f0512c0b8733e5ab

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