Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c9020119dd7fad…

MALICIOUS

PDF

85.6 KB Created: 2021-02-26 17:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5cd2ba56e587e6da0147def3eb4a6a2e SHA-1: 72a24032f892a11983a889f2a4e112dc88c459d3 SHA-256: 63c9020119dd7fade5e27e1fa80d5976beaefc9f674e9a88a05c56d7b772f9ca
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, with a significant number pointing to suspicious domains like xezojetit.ru and kinorio5.xyz, suggesting a link farm or redirection mechanism. The document body, though truncated, contains references to 'the norton anthology of theory and criticism pdf' and 'wkhtmltopdf', which may be part of a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://xezojetit.ru/123?utm_term=the+norton+anthology+of+theory+and+criticism+pdf PDF link annotation
    • http://kinorio5.xyz/vexofuxagogujubijajawegsgwf.pdfIn PDF document text
    • https://gewilowada.weebly.com/uploads/1/3/0/7/130776716/2b6d237b.pdfIn PDF document text
    • http://sexedate69.site/xinirunilazofigiluguy0r2z.pdfIn PDF document text
    • https://tapulebuzaxu.weebly.com/uploads/1/3/0/8/130814605/937e44.pdfIn PDF document text
    • https://zetakopazo.weebly.com/uploads/1/3/5/3/135351561/vekejop_xadopexigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_601e2642171af.pdfIn PDF document text
    • http://batmbatm.ru/number_pattern_worksheets_5th_gradeek96h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6011daf0ce152.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/gfhOicE/zoluzexedulexu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392209/normal_5fff5bb105a5c.pdfIn PDF document text
    • https://wezunemoxojo.weebly.com/uploads/1/3/5/3/135321606/wugidoki.pdfIn PDF document text
    • https://cdn.sqhk.co/zidenesek/OjigISw/58643483377.pdfIn PDF document text
    • http://scriptbook.xyz/11945088701qd0bl.pdfIn PDF document text
    • http://shop-you.xyz/vopoxust0sxy.pdfIn PDF document text
    • https://sizomejuxitiz.weebly.com/uploads/1/3/4/7/134748976/tubolusuru-libawutegu-pitibipupok-libosuburepomek.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/spjfzgi/best_horror_movies_2020_released.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/biwubeleba/music_sheet_stand_ebay.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/10080231491.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/heat_glo_fireplace_remote_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/setirutetavipujokagalul.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/full_body_massage_voucher_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/rubber_sheet_making_machine_in_coimbatore.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/dafes.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001243b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1243B 21212 bytes
SHA-256: 6759ebd9dbf934dcadf92704ecc0eadc71b2a92050384e71994d4589056516a6
font_00_sfnt_off0000eca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA5 5620 bytes
SHA-256: 888f5b607afc1e3267e033037bf87e664b358f6bcc36a9cd0a83b3cd1937a64c
font_01_sfnt_off0000ffa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA3 10628 bytes
SHA-256: 058e9d21c20eae921fa85cc9f6fe8f2a6221a919331da81b006151379194baf1

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