Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e7abe9a6b28d2d…

MALICIOUS

PDF

71.5 KB Created: 2021-02-12 19:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2570ec40410ac0b5c505f4419e4c2436 SHA-1: 116b3026f239c9f3ce48bf90ae38ae6b9240dc67 SHA-256: 63e7abe9a6b28d2d561ec44181d155ba0debe53ee50e4c14bf5acaa23b754e5d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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=old+singer+sewing+machine+manual PDF link annotation
    • https://neranoliva.weebly.com/uploads/1/3/4/2/134266014/fe93803bdde14de.pdfIn PDF document text
    • https://lupemofuxuxutuj.weebly.com/uploads/1/3/1/3/131383332/5241165.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/hcgesSK/free_printable_kitten_birthday_cards_for_wife.pdfIn PDF document text
    • https://cdn.sqhk.co/ditutafewaw/ijhjhjh/25635194129.pdfIn PDF document text
    • https://weworikifuga.weebly.com/uploads/1/3/4/5/134515792/8706026.pdfIn PDF document text
    • http://strahuemsya.info/20556733044bwkzy.pdfIn PDF document text
    • http://kefojixesopu.66ghz.com/zoliweliwapazedubelogusaf.pdfIn PDF document text
    • https://cdn.sqhk.co/topazawu/ifigij8/merge_dragons_secret_levels_sea_breeze.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/1vHCjee/rpg_games_online_2d.pdfIn PDF document text
    • http://vinorama.fun/big_bang_theory_cast_penny_last_namekfdkp.pdfIn PDF document text
    • http://alisaborodaenko.design/color_cars_games_monster_truck_coloring_sheetsn9ayr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wewopok.epizy.com/liberton_high_school_inspection_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/25098493146.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/cutting_tools_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/alpha_chloromethyl_chloroformate.pdfIn PDF document text
    • http://povuputuk.epizy.com/rekivoxaxosekepumawuzusu.pdfIn PDF document text
    • http://wokeben.epizy.com/38252749351.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_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 5472 bytes
SHA-256: a1c66113593ccf2e11c8db2a3030bd8caa09ea9aca14cce320af896aca30c699
font_01_sfnt_off0000eb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB35 11248 bytes
SHA-256: 9fbd6e5e33fa87b200090c3c1ecf9f368e33c3ecab12281301236cff16a68956