Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebff193889816891…

MALICIOUS

PDF

75.6 KB Created: 2021-03-03 17:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 86295cb813d6519cae7519f5e5d58060 SHA-1: 9bc37038f68f49ee668b39b5b7b68541c1ec3ff0 SHA-256: ebff193889816891f0d0b17ed73bf88689203ca8476bd90d004d1e4c7607edbf
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 external URIs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a 'manual' which serves as a lure to these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/123?utm_term=super+start+jump+starter+55001+manual PDF link annotation
    • http://palaxofivuleduj.medianewsonline.com/jidotoda.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/nURjcWD/kagudasilafinisaburogoreg.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/cideAhi/lugelarat.pdfIn PDF document text
    • http://itanto.space/live_video_from_facebook_onlinek1hkn.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/miejiwx/gowomizusilaxome.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/vocabulary_workshop_level_f_unit_7_completing_the_sentence.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fca7cfc18556.pdfIn PDF document text
    • http://boomua.site/nj_paid_fmla_guidelinesp3b7h.pdfIn PDF document text
    • http://irisca.online/astro_on_the_go_mod_apk0d5vb.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/what_is_skin_so_soft_good_for.pdfIn PDF document text
    • http://wozupabalaviv.medianewsonline.com/bizev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5fdb12c01e151.pdfIn PDF document text
    • https://cdn.sqhk.co/bilexodofose/gifw9L9/11228303637.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/14336606142.pdfIn PDF document text
    • http://yogist.fun/wamozefguh.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/who_is_the_strongest_deity.pdfIn PDF document text
    • http://idealica-ituficiale.website/gifosurovaf782.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/joxukixi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409818/normal_60017307de417.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500200/normal_5ff622eea977d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/piriformis_syndrome_exercises_and_stretches.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

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_off0000d012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD012 7068 bytes
SHA-256: fa4441ad3c1584faf7f902df23de1e3303aea9308bf8c9a18fa20266d5c8df25
font_01_sfnt_off0000e7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B9 5464 bytes
SHA-256: ba7da8758d324515e048669b52c18b313692ae0291053b728284c6a62c88c64b
font_02_sfnt_off0000fa3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3D 10628 bytes
SHA-256: a19e5f480e36ae07345d674083352e38f9f7d93e9e34fc291a960f26c97b32cd

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