Malicious PDF — malware analysis report

Static analysis result for SHA-256 642749c6afbe6527…

MALICIOUS

PDF

75.2 KB Created: 2021-03-30 19:35:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 17ecc6ce27cc8820aa5c7e9e7ffdbd50 SHA-1: ddd07215d9d6e21bd791ae10530fe96f94d980cc SHA-256: 642749c6afbe6527f449376caf5af61317926ea0c6a3d0716faf8d6ea74ec06d
126 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 embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm and a potential phishing or malicious document. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for phishing or to download further payloads.

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
  • 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
  • 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://golowaki.ru/123?utm_term=beautiful+nature+wallpaper+free++pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381081/normal_5ff5333018cd8.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdfIn PDF document text
    • http://8bitbeardsco.com/825341121615afbg.pdfIn PDF document text
    • http://wojisub.mypressonline.com/ginamako.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/pumazebizazewaj.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/Ygcdegc/how_to_check_software_update_on_lg_tv.pdfIn PDF document text
    • https://donedupefunesu.weebly.com/uploads/1/3/1/6/131607777/vadokaselozof_tiremul.pdfIn PDF document text
    • http://zisezamerares.mygamesonline.org/descargar_comic_batman_the_killing_joke_espaol.pdfIn PDF document text
    • http://copalofa.site/bbg_beginner_workoutjetlf.pdfIn PDF document text
    • http://afracheat8.xyz/les_mis_play_scriptvsguo.pdfIn PDF document text
    • https://cdn.sqhk.co/sibuborepato/iddjchd/paypal_plus_developer_guide.pdfIn PDF document text
    • http://bitiwiz.medianewsonline.com/25494973963.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/jggjexl/fade_haircut_black_short_hair.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fd1204053990.pdfIn PDF document text
    • https://lififamofupuge.weebly.com/uploads/1/3/4/3/134317858/kadubeleza-kizod-kodawukixuwu.pdfIn PDF document text
    • http://xovuwowim.mypressonline.com/50659160618.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/lizotopexupazuzelunobeqk8b.pdfIn PDF document text
    • https://wallpapers-house.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ac09d6fb-20d1-47e2-97cb-2568fc137cdf.filesusr.com/ugd/03dcd4_eb254e49f9754c7fbe405611132e14bc.pdf?index=trueIn PDF document text
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_48222f948bb94b379f292f7dd58f7586.pdf?index=trueIn 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_off0000e682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE682 4972 bytes
SHA-256: dc1a92f00dfa365a1840885257c91e3cb194d01bfb86d4f63d4f7ff89512e35b
font_01_sfnt_off0000f794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF794 11412 bytes
SHA-256: 68a5237c5e2f786352fa77b1276fdc35a9365ebdfb5107ed68c939c1f8dff2f0

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