Malicious PDF — malware analysis report

Static analysis result for SHA-256 033c4711ec382684…

MALICIOUS

PDF

81.4 KB Created: 2021-02-15 03:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 725c975e1d59f8ff0e2d0311539b9d7d SHA-1: d91c830c7188fdcc68638262d3158e1fe82b21d9 SHA-256: 033c4711ec38268486cf1e7a2c97834872024b627ad25e366ed208561105d266
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The primary redirector URL identified is https://jottigo.ru/wix?keyword=simple+altar+call+prayer. While no scripts were explicitly extracted, the PDF structure and the presence of external URI references suggest an attempt to lead the user to a compromised or malicious site, consistent with phishing or malware distribution.

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://jottigo.ru/wix?keyword=simple+altar+call+prayer PDF link annotation
    • http://bestplacefor.rest/apa_format_bibliography_research_paper361ay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381104/normal_5ff342ce922ba.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/jbig0jf/96139457598.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/iKP21wM/32000681132.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/dohdBhe/33127869232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_5ff49738b419a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_600b6469c7816.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477620/normal_5fcbc52c13fb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466662/normal_5ff713201c43e.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/LhcYzRc/vr_superhero_chat_online_virtual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495550/normal_5ffd98927ca1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5fe9c5e38c252.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/vuxagixil/pojajameneko.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/78801975724.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/blank_school_lunch_menu_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/proyecto_de_presupuesto_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/solerepilile.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/chiari_malformation_treatment_mayo_clinic.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/73163724139.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/37589410837.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 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 5104 bytes
SHA-256: f2a9d1f76b0c6dbcd84beb4176bdbe889769a3bc74bfdc3eb96be41586789edc
font_01_sfnt_off000115b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B3 10228 bytes
SHA-256: 61e0ea772eef6abc7be20c9e6c77cdbd7e2bfdb4a5787b96d2ce64dba02c2a38

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