Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c596142be52fa8…

MALICIOUS

PDF

87.4 KB Created: 2021-03-12 18:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f14046220fcce4a3c94fe6ce2d93e67a SHA-1: 5ade22fbb8697a3fa07a26964ba0988623260d54 SHA-256: 80c596142be52fa8330ea7a7346cb003751ec81d7afa0a9911f977c4b458f156
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/award?keyword=logical+reasoning+aptitude+test+with+answers+pdf PDF link annotation
    • http://copyrightram.net/samiwofavibum9hb2a.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/sovereliwip.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/63526817247cdwb9.pdfIn PDF document text
    • http://yandex-dostav.ru/20898224757yw917.pdfIn PDF document text
    • http://fishland.store/what_does_the_expression_broad_brush_meaningpixu8.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/metid6q34y.pdfIn PDF document text
    • http://4escam-bot.online/warhammer_40k_bookaw3o7.pdfIn PDF document text
    • http://blockhcain.host/les_miserables_broadway_cast_2007n7t3n.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/9359842816535qdh.pdfIn PDF document text
    • http://zeropium.com/java_spring_framework_tutorial_for_beginners9zbnb.pdfIn PDF document text
    • http://magic-spring.com/xejalojezarenifavi4t08o.pdfIn PDF document text
    • http://keto-s1.com/electrodynamics_griffiths_4th_editionfip5w.pdfIn PDF document text
    • http://ottics.ru/gujuxowurifevosudani9qej5.pdfIn PDF document text
    • http://blacklaser.ru/durokf7we3.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/68843274891.pdfIn PDF document text
    • http://akmurzina.com/uppababy_vista_v2_stroller_without_bassinet5lp45.pdfIn PDF document text
    • http://doxedisipi.scienceontheweb.net/libimerirunog.pdfIn PDF document text
    • http://albl.ru/miracle_ear_foundationiltke.pdfIn PDF document text
    • http://creditreportusa.info/oster_kitchen_center_mixing_bowlshcalt.pdfIn PDF document text
    • http://afracheat2.xyz/lease_rental_agreement_template_freez1813.pdfIn PDF document text
    • http://natnat.fun/55816380586fdfka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jujobope.atwebpages.com/4638504860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71bbbb0a-ab46-4f7a-bd6d-172738b3aeb2/45889363415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c78d8b7-c83b-41ba-8b7e-6df0fa9f0bf6/32924054189.pdfIn PDF document text
    • http://vovojoj.atwebpages.com/apgar_2020.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11813 5448 bytes
SHA-256: 1e23c856f927cd49c9c7a59cbd1e9d0ef8cf864816cdc6435d99cefc2e516a05
font_01_sfnt_off00012ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB4 11016 bytes
SHA-256: 367750b372a527f73530a5e15a397aba060ec95814127c5c33a7f26760dd4631

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