Malicious PDF — malware analysis report

Static analysis result for SHA-256 32741c5721f6fce5…

MALICIOUS

PDF

68.9 KB Created: 2021-02-11 22:33:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4bd4606e096a2606505a764cf3eba70a SHA-1: 7b5ac603ce22b313a510ff7b9f82726b9113d092 SHA-256: 32741c5721f6fce5d458c48ed16a21b4916cab13db75eadbc1e57c0578fe9b3d
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://seumenha.ru/wb?keyword=tactics%20for%20listening%20third%20edition%20pdf PDF link annotation
    • http://vokegitejupud.iblogger.org/freelance_reporter_jobs_salary.pdfIn PDF document text
    • https://vimebadexij.weebly.com/uploads/1/3/5/2/135295776/mizezofak.pdfIn PDF document text
    • https://cdn.sqhk.co/zevivovakok/Xgiz7nY/tic_tac_toe_family_day_care.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/Whjhjha/69948452059.pdfIn PDF document text
    • https://pofemazavuson.weebly.com/uploads/1/3/2/3/132303373/jikovavatabeperibof.pdfIn PDF document text
    • https://cdn.sqhk.co/galemojubemo/dShblih/best_online_course_to_learn_to_sing.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/gjdifSA/amazon_delivery_driver_salary_texas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sirerig.epizy.com/wujegusujagosokasemedew.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/artificial_intelligence_research_paper_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/nejovimitovenegopujezo.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/waste_management_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/55925855403.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/capitulo_4b-_8_realidades_2_answers.pdfIn PDF document text
    • http://lijutowefat.epizy.com/maduwi.pdfIn PDF document text
    • http://tomosuromiv.epizy.com/free_bodyweight_training_program.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/whatsapp_video_status_sad_song.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/82935859420.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/10634760670.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_off0000d1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 5368 bytes
SHA-256: 8c90d59c5b375ba5b597eb4873ea916825e97f2fb67849d74ae6ed94e7e67f89
font_01_sfnt_off0000e402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE402 10004 bytes
SHA-256: 45ed833a65d80cd11b762a12c9d0b2de7c4b9b7ba7faea8410fbdd799176d70d

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