Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c5b1f9f62944bc…

MALICIOUS

PDF

67.7 KB Created: 2021-02-21 16:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b04b59284e59134056f1876a1af5600 SHA-1: 5fea3bd2150afa54179b603c1fa81f67506eb118 SHA-256: 71c5b1f9f62944bcd79f1fef6a917112b2c30166bccc12db800b10f9d2bc94bf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=character+analysis+in+the+red+badge+of+courage+answer+key PDF link annotation
    • https://cdn.sqhk.co/kinibemazoz/aGibhh8/never_gone_2016_subthai.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/iqtxhfF/34608241334.pdfIn PDF document text
    • http://jurelireroxux.22web.org/elementary_mathematics_book.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/hhgsLic/vutuvizigotoju.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/hjhjqFi/bodivufobameteduguxevo.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/ghhbnhf/ximomixusuverux.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/r6ijhf5/fovefabokopukod.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/xeroguru/sql_database_administrator_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/saregunipupikezeruvemat.pdfIn PDF document text
    • http://pamakejexo.epizy.com/42493074702.pdfIn PDF document text
    • http://niwanabumupe.epizy.com/baby_cartoon_pics.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/tetifojekexefowe.pdfIn PDF document text
    • http://piduvazudofem.epizy.com/pinozorebig.pdfIn PDF document text
    • http://ruxomipeb.epizy.com/75336538083.pdfIn PDF document text
    • http://melufisagaw.epizy.com/la_celestina_descripcion_personajes.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_off0000ccf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF3 5588 bytes
SHA-256: 685d7d7840519579a50a9d2bb3b00a3e1fc9336bbda096e56296d82e35155c66
font_01_sfnt_off0000dffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFD 9876 bytes
SHA-256: ccb9e62aebded3c96dbaec8050e351362d4133c1c332bdaf5c614d8b49f2c894