Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fca722e90981de8…

MALICIOUS

PDF

74.0 KB Created: 2021-01-26 05:51:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 87eacdb4074546060c1a9e357c2c4395 SHA-1: 328522fb9a9682c793219470ae4ae38125f37259 SHA-256: 8fca722e90981de8e3edf1ca082ae6a7970e664e524fffe0c8f84ea41abe5390
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=bu+lost+id+card PDF link annotation
    • http://detonicro.website/hide_me_vpn_free_download_full_versionshmql.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454544/normal_5fe90ff5aaf53.pdfIn PDF document text
    • http://ryduslim.website/zerowubutupisawipopirab3iu.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/rukuvegagufeno_jewapezale_fisutizi_wuzonebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_600a576f2c203.pdfIn PDF document text
    • https://cdn.sqhk.co/jilelemo/dMgjhij/nail_art_and_spa_saint_petersburg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381544/normal_5ffdb6d2a7b09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5ff46453323fe.pdfIn PDF document text
    • https://xiluxobafuju.weebly.com/uploads/1/3/5/3/135323992/4257233.pdfIn PDF document text
    • http://epipog.com/nixolixepajorufepodxe4m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5fcbd8960591b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475588/normal_5fe691940db7c.pdfIn PDF document text
    • http://remontvorot24.com/45912421267r0ebh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450730/normal_5fc8fb0e18bdc.pdfIn PDF document text
    • https://cdn.sqhk.co/ludibipimilu/jdicWji/arduino_nano_v3_0_pinout.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/viromibukoleliw/attendance_allowance_age_uk_factsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/brinks_automatic_door_lock_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/video_editing_course_syllabus.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_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 4984 bytes
SHA-256: 6ab83a699bea7e2eaf044d3c9861550cad4ae8d71e4154a587b87dc4603750f6
font_01_sfnt_off0000f545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF545 11236 bytes
SHA-256: cc3a540b4d3c966e00355514a397dfc86d5f11ca693a179ae892587ef8a11163