Malicious PDF — malware analysis report

Static analysis result for SHA-256 721159b9ad945e80…

MALICIOUS

PDF

72.2 KB Created: 2021-02-24 00:23:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2da127f279a706c027fb9fdd5047c53d SHA-1: d5bd51c1db97dc057f680e62c5b3edd0202cccf4 SHA-256: 721159b9ad945e80feca84ef8a93f454cdaa7aed4e745c5daafdd0be656540b0
196 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
  • 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/wix?keyword=tv+listings+santa+fe+nm+comcast PDF link annotation
    • https://mulodetudujidof.weebly.com/uploads/1/3/5/3/135325190/pimasev_bavabe.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/gdUjf8E/one_punch_man_season_1_opening_song_download.pdfIn PDF document text
    • https://lukajupuxeburi.weebly.com/uploads/1/3/4/6/134630189/8bf77f86d496.pdfIn PDF document text
    • http://epipog.com/39477926360v3ylz.pdfIn PDF document text
    • http://sbrf.link/wigumisekofojeralizl8hy.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/bhjhcgd/86537862357.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/gifAqge/gukosovakalefilujewe.pdfIn PDF document text
    • https://cdn.sqhk.co/mejofiwog/gjeUii4/monster_energy_supercross_game.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/lanorolowu/sodus.pdfIn PDF document text
    • http://pasazaxara.rf.gd/71284661192.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/givaxavaviza.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/friend_zone_2019_subtitle_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/43622973796.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/telugu_feeling_songs_share_chat.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/honey_balsamic_chicken_sheet_pan.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/sumutagaler.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/archero_boss_guide_chapter_3.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/bouncing_dvd_logo_screensaver.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_off0000e059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE059 5116 bytes
SHA-256: 7d4ebf684ceef3e1fb7fe90486718fbd60c599d8dae64911af6585952a870694
font_01_sfnt_off0000f1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C1 9980 bytes
SHA-256: ace0abed6423746381133e7c64630c1d18da3d31886a04e884c1eecc9b3920cd

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