Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9363c3973583d85…

MALICIOUS

PDF

68.9 KB Created: 2021-02-18 02:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dc88eae87eac06e4bce465d032354a34 SHA-1: 5902d6efe3877a1bf3564815bb6b2c4ad8243292 SHA-256: a9363c3973583d850fae9e32ba6b2ae13c1c5033ed4536096d3b020b7c8aeb72
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://seumenha.ru/wix?keyword=envision+integrated+mathematics+2+answer+key+pdf PDF link annotation
    • http://voiprormul.xyz/absorbancia_a_transmitancia_formulaa6jza.pdfIn PDF document text
    • http://gprofights.ru/vintage_car_wallpaper_for_pc1anmc.pdfIn PDF document text
    • http://uplrezina.site/26152582124n9gjo.pdfIn PDF document text
    • http://byt-upak.ru/cruise_lines_stocks_todayp5cri.pdfIn PDF document text
    • http://armada.technology/glory_road_movie_soundtrackhmzeb.pdfIn PDF document text
    • http://jigatinapa.22web.org/98091578835.pdfIn PDF document text
    • http://keep-travel.com/23384900921oi02u.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/wibedubosateg/xibagesedosoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/abundance_mentality.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/kiwujutovewinevuremu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/dawanofowuradidote.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/pictures_of_the_ugliest_fish_in_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/gabuvofopapodedejatujipu.pdfIn PDF document text
    • http://ginojakoli.rf.gd/ethical_fashion_guide_nz_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/16x2_lcd_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/nefawozoganipirivakavu.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/android_auto_compatible_cars_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/queensland_antenatal_screening_guidelines.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_off0000c087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC087 5944 bytes
SHA-256: df8962ff88a4ccd23f8ee66b6ac44a990401c5ff222016bb765919416e24f76c
font_01_sfnt_off0000d4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C5 15480 bytes
SHA-256: cdfc6b6eb1b17e9f827bce6af74cb1b64a24dd9e1dd105aa8f2a6adbaba5893a