Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0db5c7f24a281f1…

MALICIOUS

PDF

73.2 KB Created: 2021-03-05 21:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 979098fccbc49f3520dac16bcdac2a4e SHA-1: f95fd283dcff71c00d22039a5b5c5ec5268fba59 SHA-256: a0db5c7f24a281f1e54794fecec854e52e5d8556f7d72adcc692e0d658646078
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://jottigo.ru/wix?keyword=apk+adventure+town+mod PDF link annotation
    • https://fosegeluka.weebly.com/uploads/1/3/4/7/134717840/4389347.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/diferencias_entre_el_psicoanalisis_y_la_terapia_cognitivo_conductual.pdfIn PDF document text
    • http://geramik.22web.org/elementor_blog_templates_free.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/what_happens_when_you_eat_wheat_after_being_gluten_free.pdfIn PDF document text
    • http://naturelofo.mypressonline.com/stihl_battery_hedge_trimmer_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/Djhifhf/todo_el_mundo_cuenta_acordes.pdfIn PDF document text
    • http://kujunat.medianewsonline.com/lemogaxakofonafox.pdfIn PDF document text
    • https://sutapupimode.weebly.com/uploads/1/3/4/6/134615637/e3dc0abfd33.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/52644548356.pdfIn PDF document text
    • https://cdn.sqhk.co/wexapitode/jgjGgjb/yandex_money_transfer_to_bank_account.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/gchidEK/63323479914.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/biijdHa/hunting_safari_3d_game.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/97662580884.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/nagev/wosagakalexopokada.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/lavelarolobetawufizojawij.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/change_label_template_existing_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/how_to_download_rock_band_4_songs_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/imprimir_curp_nuevo_formato_a_color.pdfIn PDF document text
    • http://jusisow.rf.gd/dark_souls_remastered_pc_mit_controller.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_off0000e21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21F 5100 bytes
SHA-256: 3f637cdfcdc622e433f9328105851591ff7ed88d5576aec22acbebdea7574b73
font_01_sfnt_off0000f381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF381 10600 bytes
SHA-256: e641b23f72f6a4a331bf996c4714615d6d2f01a13e5bc919e6fa34a9a14e345b