Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d4faccda90813b…

MALICIOUS

PDF

72.2 KB Created: 2021-02-26 00:05:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ed32632636221fe0716bb231c994d56b SHA-1: 1d2cf0896f5d3d62f1bb0b5f4091ed45abf2182a SHA-256: 15d4faccda90813b82d1aa03e2be958a79e3c6da608168dd3665eedc682e2ba7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting services, indicating a link farm designed to distribute malicious content or conduct phishing. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and extensive external linking are indicative of a malicious document, likely serving as a lure to download further payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/award?keyword=toro+s200+snowblower+carb+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476952/normal_60381ef35e660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393755/normal_600b73eed037b.pdfIn PDF document text
    • https://wajifisawebe.weebly.com/uploads/1/3/4/4/134480175/6010271.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/Qbhgmuz/jabigawavanupukixogujoxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452392/normal_60237bc860b85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459034/normal_60381e5aa3b78.pdfIn PDF document text
    • http://jofosisajagov.iblogger.org/report_illegal_dumping_austin_texas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_5fe2102960f5d.pdfIn PDF document text
    • https://xasigebopij.weebly.com/uploads/1/3/0/7/130775268/nojetez.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/WYgjBjd/pocket_knight_2_mod_apk_terbaru.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/lhgEjjG/southern_fried_chicken_goujons_tesco.pdfIn PDF document text
    • https://gekuxufetog.weebly.com/uploads/1/3/1/3/131384115/cda01d.pdfIn PDF document text
    • https://cdn.sqhk.co/mewoveri/gehijd5/95785543094.pdfIn PDF document text
    • http://rupitori.66ghz.com/ribivofupilaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452373/normal_6032f4f9d51f3.pdfIn PDF document text
    • http://vejobazure.22web.org/c_programs_for_practice_with_solutions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xabofaveretezu.rf.gd/89330039155.pdfIn PDF document text
    • http://sewekovekejir.epizy.com/33443922441.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_off0000e57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57D 5716 bytes
SHA-256: a08ddbd4b8d8030bba05a50a467e9c3cd4ca44f23f785bdd0cae3c960e1ca9f4
font_01_sfnt_off0000f8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EC 10916 bytes
SHA-256: 19968101c8bbd69e1e21b36d105791771bbb190ac9724d0aa6d489620b8a1c7e

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