Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90bb695ff18ae22…

MALICIOUS

PDF

164.8 KB Created: 2021-01-28 04:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 80786fc7cf54e39a97b4d907faf79a76 SHA-1: 9a342a70dca2fdebaf8dddeca3540d9e5848310e SHA-256: d90bb695ff18ae2230f321415d71c8ad54003ea2cc2694f0652329c214da3b33
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0) and an ML classifier indicating maliciousness. The document contains numerous external URIs, with one prominent URL pointing to 'jottigo.ru', suggesting a phishing or malware distribution attempt. The presence of embedded links and the overall structure indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/123?utm_term=all+the+mods+3+faithful+resource+pack PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451737/normal_60047cbf3c583.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/kafimixobaw_zubijuranojuse_wisotuxibusatez_medunaguge.pdfIn PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/tipizije.pdfIn PDF document text
    • http://copyrightnotices-form.com/jibaladhyw4e.pdfIn PDF document text
    • https://gifetapajuloper.weebly.com/uploads/1/3/4/6/134682222/45bfc.pdfIn PDF document text
    • https://wodanosivowifig.weebly.com/uploads/1/3/4/5/134593279/845aef03.pdfIn PDF document text
    • https://nazasakodaz.weebly.com/uploads/1/3/4/6/134667833/juduwezir-tododejukan-kosuvagu-ninaki.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/608608642174si7z.pdfIn PDF document text
    • http://lagujegivupani.22web.org/apricorn_aegis_padlock_pro_a25-_ple256_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374518/normal_5feb23d362b5c.pdfIn PDF document text
    • https://galofufe.weebly.com/uploads/1/3/1/3/131384583/2114878.pdfIn PDF document text
    • https://sarotokatot.weebly.com/uploads/1/3/2/6/132682281/kewow.pdfIn PDF document text
    • http://prizinsta365.website/kreg_screw_length_guidedllpz.pdfIn PDF document text
    • http://baffer-shop.space/sevesoxejuzuay14h.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/sugowubuf/amar_akbar_anthony_video_song_hd.pdfIn PDF document text
    • http://lepugip.epizy.com/gopodoruxovoruvateze.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/14134338454.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/photography_contract_template.pdfIn PDF document text
    • http://laxuraxosolun.epizy.com/alien_shooter_1_full_version_pc.pdfIn PDF document text
    • http://badiwofotafazol.epizy.com/chapter_5_appendicular_skeleton_worksheet_answers.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_off00024743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24743 5612 bytes
SHA-256: fe2007a348d084801c6ca4d7aaef97e4d6bd17e508853750df5af04cd449d756
font_01_sfnt_off00025a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25A2F 12964 bytes
SHA-256: d9296117ff418b9e26fa7a9a52c7ec4a0e555571d153ef975cce3b61b9de3f67

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