Malicious PDF — malware analysis report

Static analysis result for SHA-256 a065ab727c513922…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 23:57:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 329237bea994fd09ac7de5e7b4f00556 SHA-1: afbaac6302a5c1df5fa2320dd156c2dcbf13be1f SHA-256: a065ab727c5139224988109ee0c634fba803fa3f54070f569358e2be2886e932
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it uses an image lure for SEO redirecting to a phishing site. The embedded URLs suggest a phishing attempt disguised as a free download, likely to distribute further malware or steal credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=knife+of+dreams+pdf PDF link annotation
    • https://cdn.sqhk.co/gixelotopa/fABjahj/52018103461.pdfIn PDF document text
    • http://kijofizovurisos.medianewsonline.com/pugatoworixum.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdfIn PDF document text
    • http://chaptejvxz.fun/delonghis_safeheat_ceramic_heater5kk8j.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/49503554360.pdfIn PDF document text
    • https://cdn.sqhk.co/muzolorakow/jhhagj3/stress_ball_diy_rice.pdfIn PDF document text
    • http://wordsidepost.top/ernest_hemingway_hills_like_white_elephants_audio1n9a5.pdfIn PDF document text
    • http://all-gopro.com/figurative_language_definition_and_exampleskngin.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/iaL4mge/petof.pdfIn PDF document text
    • http://5coupon.info/gipagiwofokatosa7xqp.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/vigevot/mocasines_plataforma_mujer_mercadolibre.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/bise_lahore_2019_2nd_year_date_sheet.pdfIn PDF document text
    • http://bobujosu.epizy.com/linearity_worksheet_3_answers_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/aba_english_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/50806596629.pdfIn PDF document text
    • http://nukivamo.myartsonline.com/gupima.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/what_kind_of_oil_do_you_put_in_a_yamaha_kodiak_400.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/renifazuju.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/bal_brahmachari_video_songs.pdfIn PDF document text
    • http://pibanexotobove.rf.gd/vitup.pdfIn PDF document text
    • http://voferinokubusob.rf.gd/am_or_pm_ka_full_form_bataye.pdfIn PDF document text
    • http://vumamuv.myartsonline.com/blue_and_white_christmas_tree_meaning.pdfIn PDF document text
    • http://xepalufozakot.epizy.com/pegogajevozadarakukabafo.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/jusejo.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_off0000efc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC7 5124 bytes
SHA-256: 2b4277655649e3b4ce8f144f50115fab846a5436aa7a6b7c33cc6b81198d025a
font_01_sfnt_off00010122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10122 11032 bytes
SHA-256: 2c1035829f12c19b205c494b4ace6e763f16edb255830326338fba8d1234f779

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