Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f078bcc1ddbc9dc…

MALICIOUS

PDF

68.3 KB Created: 2021-02-24 23:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5f6a59affb33e1d21cbb4910159a0d7d SHA-1: 493c6348e788db3a4d95e80d890097dd5123fab9 SHA-256: 0f078bcc1ddbc9dc3d707e33e9e3003b5241263438c4485f8dd8535eaa75c7c7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/award?keyword=epson+xp+424+ink+amazon PDF link annotation
    • https://cdn.sqhk.co/kupuruvew/Jhiadgg/tap_the_frog_doodle.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/JTKNiaf/descargar_bailarin_super_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/idFgcgc/nagakezipog.pdfIn PDF document text
    • http://kefowawud.22web.org/icai_mock_test_answers_may_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/U6ijhcI/38786111968.pdfIn PDF document text
    • https://vawilateg.weebly.com/uploads/1/3/4/6/134697686/lupudifi_megasubat_sevovatemigifed_vukejikiwam.pdfIn PDF document text
    • http://ziragekezazu.iblogger.org/79380082222.pdfIn PDF document text
    • https://zisumujabi.weebly.com/uploads/1/3/5/3/135315444/8abc289b.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/solonebosop/tamil_nadu_chennai_weather_report.pdfIn PDF document text
    • http://nugifola.rf.gd/how_many_quarts_of_transmission_fluid_does_a_jeep_grand_cherokee_take.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/commerce_department_steel_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/types_of_energy_sources_worksheets.pdfIn PDF document text
    • http://tibilekozox.epizy.com/ax_business_connector_configuration_on_report_server.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/fifijolivazomim.pdfIn PDF document text
    • http://jipesofu.rf.gd/ch_play_cho_my_tnh_bng.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/4814589290.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/awesome_love_wallpapers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/upper_gastrointestinal_bleed_treatment_guidelines.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_off0000cb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6C 5196 bytes
SHA-256: 8e8e47fe70740550452cf98fa60bccf1b6f6c76fd37007284d3bcb739220da93
font_01_sfnt_off0000dd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD24 11176 bytes
SHA-256: c8356ec5355fb99e0e9c403950c6936b2cd3d5d59c1042a4558b35599d2e623c

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