Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d49420d7aa1a4c3…

MALICIOUS

PDF

75.0 KB Created: 2021-02-13 19:39:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b3aeddd9ad6947117487c995e4b1fd8d SHA-1: 394647f50c12d10820fccf819d48bf49c0afc94c SHA-256: 2d49420d7aa1a4c30abcfc2195ab34d02420d3b7fc6d474da805523a452b35c5
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious domain, identified by multiple heuristics as a redirector for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to a malicious site.

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://crophysi.ru/123?utm_term=male+greek+names+that+start+with+a In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408703/normal_5fec9fb1b87eb.pdfIn PDF document text
    • http://astrohelp.space/19441042544a9q80.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/hNihAAN/she_didn_t_know_punjabi_song.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/iejAVhd/hocus_pocus_halloween_costumes_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381978/normal_5fe6c9ed535d6.pdfIn PDF document text
    • https://cdn.sqhk.co/josozudibud/cidpijL/84747216539.pdfIn PDF document text
    • http://kprovk.xyz/essential_organic_chemistry_3rd_edition_bruicedofhq.pdfIn PDF document text
    • http://kindraretterath.com/computercraft_monitor_apih19ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_601861eb9e055.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/cRr1gic/ninja_turtles_puzzle_android_game.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/ruzumeb/auto_trans_manual_valve_body.pdfIn PDF document text
    • http://jefitanebigovun.rf.gd/loworotudasaditixuzimip.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/anemia_por_falta_de_hierro.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/68640310528.pdfIn PDF document text
    • http://keluwuvofaj.epizy.com/zubenamanovimof.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/somidemiwexegekokowinofu.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_off0000e97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 5260 bytes
SHA-256: 94532798d22ab7664823abdec8967a14848f84d7848241ffeab01057e6a27d4c
font_01_sfnt_off0000fb55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB55 10432 bytes
SHA-256: 26e2c07143161de0ab5fe3a3656ff4bdf7333ed380991fc6604c067423e3352f

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