Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e198d207b4e7ef…

MALICIOUS

PDF

82.0 KB Created: 2021-03-01 07:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e4747e3aa17d0e670ffcecf6c5124f22 SHA-1: efd9f81f7ecff9c0b5105f68f14bfabb2bf39dc9 SHA-256: 10e198d207b4e7ef24087e3b542da6a00b04c8f107d9b41009e9b0d31d9fa5ab
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it uses an image lure for a free-download phishing scheme. The embedded URL points to a redirector that likely serves the malicious payload. No scripts were extracted, but the PDF structure and URL suggest a phishing attempt to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/award?keyword=trigonometric+limits+worksheet+with+solutions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449973/normal_602420161e362.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/thcijsR/40664184260.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/qr_barcode_reader_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448345/normal_603344db9e1ba.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/free_typable_family_tree_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/Vgigjcn/stripe_pay_invoice_api.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452846/normal_6008b3ac7898a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404723/normal_5feeec0a7decb.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/aztec_calendar_wallpapers_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502245/normal_6008e103cee9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412905/normal_5fed9cf885544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416934/normal_603128cbae325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472185/normal_6016fc545c689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5ff601cbf3435.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/edinson_cavani_injury_report.pdfIn PDF document text
    • https://cdn.sqhk.co/niwexifa/sibghk3/vusujojosuli.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/primeros_auxilios_psicolgicos_oms_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A8 5108 bytes
SHA-256: fdd28388b33507a056de44c627b4516f1d62d71987529cb4154f3614f9b95b89
font_01_sfnt_off0000f4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F8 15200 bytes
SHA-256: befb9161ddf3440624016bbba275751205053014d4d74f53aee1d67bd66ab8c9
font_02_sfnt_off000125b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B6 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357

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