Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc55e25be6e26a21…

MALICIOUS

PDF

74.1 KB Created: 2021-01-25 07:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 87d20a95253c4b9e35f8d83e8c1e98a3 SHA-1: f6f34c0c003ce479c2b368c892035b4d5130523c SHA-256: fc55e25be6e26a21a791420724ada685050f82819d105b6002c9defd880211f2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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/aws?utm_term=random+trivia+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/zumufapofow/gM7ihnT/galaxy_backgrounds_for_computers.pdfIn PDF document text
    • https://wapixanap.weebly.com/uploads/1/3/1/1/131164574/gusebefinu.pdfIn PDF document text
    • https://sivabukejiwija.weebly.com/uploads/1/3/4/4/134459056/cea0dcb7949c1.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/E0hct3l/free_music_for_video_editing_iphone.pdfIn PDF document text
    • http://jinoxiresajigeb.iblogger.org/tamifozulawarisovadaxuna.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/Qgejhjf/battle_angel_alita_last_order_perfect_edition.pdfIn PDF document text
    • https://foxewazijibaj.weebly.com/uploads/1/3/1/3/131379544/mobon-jurejumup-tebaziseroliwez-wetukot.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/whajbji/build_your_dream_house_app.pdfIn PDF document text
    • https://lonapumerupa.weebly.com/uploads/1/3/4/8/134853684/2938568.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/icljagj/geometry_dash_world_download_pc_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dunupepemogakiw.epizy.com/zikepere.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/zadabebofada.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/1482112041.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/62180591826.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/aradhana_hd_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/88182620775.pdfIn PDF document text
    • http://repafow.epizy.com/62512382391.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/14355398797.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_off0000e194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE194 5224 bytes
SHA-256: 6ecd01ab549ead9c709546fafdce146a4513ec6ad34db0b97f92727263745c4f
font_01_sfnt_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 11816 bytes
SHA-256: 757c8ee5f29dfe4a51692a1a37c18b901d020f6f9b88b119ea075eefab90e5b5

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