Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e56e924a2611fe7…

MALICIOUS

PDF

77.9 KB Created: 2021-03-01 15:33:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ffb0b77717977a20d81174afb53057a3 SHA-1: 40109cbb33b426bb940f7278e8fc1abde0d88a9f SHA-256: 4e56e924a2611fe7a072ab9b514e5e24f60e664d54421bdab268d05dc058b5da
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/123?utm_term=how+much+does+a+junior+graphic+designer+make PDF link annotation
    • https://cdn.sqhk.co/xevowuto/cRojegg/best_baby_monitor_app_android_and_iphone.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/rapizulupalalojaviriru.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/gisadegof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409840/normal_5ffc8863d0cfb.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/hathbaD/awesome_octopus_thigh_tattoo.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/hgeihge/princess_coloring_book_for_adults.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/2008_dodge_grand_caravan_sxt_recalls.pdfIn PDF document text
    • http://sozimaxetupow.mywebcommunity.org/nojujedexoligasarig.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/geyhgWB/kumeponibekedufit.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/4SYMzc4/93511395113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485580/normal_5fce70de26850.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/5hbFjcE/lucky_draw_app_for_windows.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/gizonukorad/sat_bubble_sheet_math.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/madame_bovary_part_3_chapter_7_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/bubererodonixawemokifefow.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/woketuzironajoroluv.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/bow_wow_meow_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/66209348547.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_off0000f156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF156 5648 bytes
SHA-256: 6ace8c5f4c2bbd6c0611ada586644925558b86342aa4f25e59b7b0558c223d3c
font_01_sfnt_off00010475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10475 10640 bytes
SHA-256: 2bd25430234a80656e479724e5eb21ce7d2b5262f31e94d3c9e2609d42ba3498