Malicious PDF — malware analysis report

Static analysis result for SHA-256 486e8d7e03f685e5…

MALICIOUS

PDF

82.0 KB Created: 2021-04-23 03:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 81b5fa922d650e2979d726392ff5fe5d SHA-1: 70ac5dc9ad436b5d99ba1815680fbd838a742ae2 SHA-256: 486e8d7e03f685e5167608c8d0b7129649304ce948eda1c7ee68fac4692f8846
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 0.9964

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/strik?utm_term=canon+powershot+sx20+is+sample+photos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380079/normal_6025c78b5c442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388272/normal_6067a8159b260.pdfIn PDF document text
    • http://indohealth365.online/99937369652jhea3.pdfIn PDF document text
    • https://valutakawewa.weebly.com/uploads/1/3/1/3/131378791/5106127b4c.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/cisco_ccna_voice_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404969/normal_605d916ea4d73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5fc9336899326.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/what_is_a_unanimous_consent_agreement_quizlet.pdfIn PDF document text
    • http://namabal.scienceontheweb.net/analysing_sentences_an_introduction_to_english_syntax_4th_edition.pdfIn PDF document text
    • http://hookup753.fun/ferrari_458_spider_price_202071lfc.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/9223396.pdfIn PDF document text
    • https://xokijawajix.weebly.com/uploads/1/3/4/7/134726357/zakotirub-kisibujojaxa-funubos-leradon.pdfIn PDF document text
    • http://xagixowedobosab.medianewsonline.com/air_pollution_information_in_english_free_download.pdfIn PDF document text
    • http://nopadejitakuf.22web.org/kikironaferes.pdfIn PDF document text
    • https://zowamuzifam.weebly.com/uploads/1/3/1/1/131163536/5852398.pdfIn PDF document text
    • http://nevinidonet.mywebcommunity.org/best_annotation_app_for_apple_pencil.pdfIn PDF document text
    • http://robot3.site/413991599284r9f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_602492ea9d213.pdfIn PDF document text
    • http://stepka2016.xyz/sas_macro_do_over_list5uqs4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sopavame.onlinewebshop.net/renaximodimivekubesog.pdfIn PDF document text
    • http://niselasot.atwebpages.com/misetolimagoluxabazipipus.pdfIn PDF document text
    • http://puwapogajamafar.epizy.com/the_kkk_and_the_kartilya_ng_katipunan.pdfIn PDF document text
    • http://dupepoge.onlinewebshop.net/96511439382.pdfIn PDF document text
    • http://wenares.myartsonline.com/98050922278.pdfIn PDF document text
    • http://sulumasofip.epizy.com/17375424695.pdfIn PDF document text
    • http://zagaturatok.epizy.com/revodozuzetotoperebu.pdfIn PDF document text
    • http://fazatela.myartsonline.com/bescherelle_grammaire_pour_tous.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_off0001017b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017B 5400 bytes
SHA-256: b2390943a1a88d85988c0d1f0b9158b0342a96e0a48ac84928c2a2436598f261
font_01_sfnt_off000113bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113BC 11280 bytes
SHA-256: 3d57fc4c6a8f45eb93f254ee8da93b582d6fbfc38a59169c4231df636dcd381b

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