Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a7a837f2bc6948…

MALICIOUS

PDF

73.3 KB Created: 2021-02-18 01:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: adf5702f08d8a4f4999c746cca0dcd7e SHA-1: cc8053b84f9b26a351e959d2ffe9baab6f6c1c8a SHA-256: 34a7a837f2bc69488ab467a0fa05511dd3d3ec7d532a7ce7135d3309965f3f8d
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tube+mate+apk+download+old PDF link annotation
    • http://confirmyourverifiedbadge.com/13679080966jd4lc.pdfIn PDF document text
    • http://reweder.site/subnautica_how_to_charge_cyclopstx2wt.pdfIn PDF document text
    • http://keto-s1.com/bible_commentary_online_strongsk3jp4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385228/normal_600c40be5edf8.pdfIn PDF document text
    • http://verifiedbadges-form.com/justice_league_cartoon_network_episodesvh2yl.pdfIn PDF document text
    • http://logemopi.22web.org/kibekuros.pdfIn PDF document text
    • http://interbankdigital.com/whirlpool_duet_dryer_manual_reset9l37x.pdfIn PDF document text
    • http://abzac.me/advanced_filter_excel_template6hiig.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/jojitagifuva/lumekonilunatal.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/coreldraw_graphics_suite_x5_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/dafugorififugitobomuja.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/esma_guidance_competent_persons_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/controlled_crying_guide.pdfIn PDF document text
    • http://logaraba.rf.gd/zuzejemube.pdfIn PDF document text
    • http://joruvone.epizy.com/nazajuruwibameme.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/s_d_m_full_form_in_english.pdfIn PDF document text
    • http://lojofoverom.epizy.com/75_question_bubble_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/79168845728.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_off0000e32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32F 5076 bytes
SHA-256: b664a12ee5b001aacbf4ce566ae20f8007ee6e5c3992225501d188daaf64db35
font_01_sfnt_off0000f470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF470 10600 bytes
SHA-256: f4a1c774fb48b839cb5e4ebbcc647f40bc59f7f4af201c98c0da7c06960662fb