Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5a5a595136de6d…

MALICIOUS

PDF

78.9 KB Created: 2021-02-04 04:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9884506dd155b1516a9aee02000d6e0b SHA-1: 2d15ed556b4d1c39231cdf9741dc9f11a6d1ccad SHA-256: 0f5a5a595136de6deabcb3c68c04bd9294127caad1e2fc1ef280a2591f6790ae
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector, specifically linking to a URL associated with phishing. The ML classifier and ClamAV detection strongly support this assessment. Although no scripts were extracted, the presence of a malicious redirector URL suggests an attempt to lure users to a malicious site, likely for phishing or malware delivery.

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
  • 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.
  • 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.
  • 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://yafferge.ru/aws?utm_term=cheb+mami+albums In PDF document text
    • https://cdn-cms.f-static.net/uploads/4459481/normal_600c16f9e535d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392871/normal_5ff3b3340955b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481540/normal_5fe41d69e9dad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449616/normal_6003698733192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_600fd562515bf.pdfIn PDF document text
    • http://jigatinapa.22web.org/drosophila_experiment_lab_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466173/normal_6003cac1df21d.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/jozetej/22654205178.pdfIn PDF document text
    • http://virilos.epizy.com/lagabasa.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/49928984875.pdfIn PDF document text
    • http://jasosuwer.epizy.com/chsl_2019_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/training_guide_neopets.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/kabel_light_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/horse_calendar_2020_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/92582910611.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/xalekataxazibopomoxikazu.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/waxinufukeb.pdfIn PDF document text
    • http://lobulowigewimu.epizy.com/don_t_panic_piano_sheet_music.pdfIn PDF document text
    • http://pujusojup.epizy.com/dasam.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29A 4872 bytes
SHA-256: 437c88b16540cbb2a1fa98fec378ec130501a876977af76b41ce012bcdc736c5
font_01_sfnt_off0000f2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F7 11796 bytes
SHA-256: 478fd752e13dfc10e122f077868e1b4bc66088ad5fc7b70c6241e9cd167b6dfc
font_02_sfnt_off00011986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11986 16060 bytes
SHA-256: 2cca29575edef7a9880cf400a7847cc5df22ba1ee7edc19c7b9bafe603f6c979

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