Malicious PDF — malware analysis report

Static analysis result for SHA-256 200350da465a2606…

MALICIOUS

PDF

73.3 KB Created: 2021-02-20 02:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 03b5502eceed5281eceb928afedf4cc3 SHA-1: a0adfa89e66df3e158d8338be8b180c98bb0e412 SHA-256: 200350da465a2606cf31aecf61478a322b0231253a2279e27dca8f4e011425d8
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the overall structure suggest an attempt to distribute malware or phish for information, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=dungeon+hunter+5+mod+apk+5.0.0q PDF link annotation
    • https://radewisuvux.weebly.com/uploads/1/3/4/6/134689192/8330351.pdfIn PDF document text
    • https://kitedagipan.weebly.com/uploads/1/3/4/8/134892955/papani-mudug-fojasonam-faluloladis.pdfIn PDF document text
    • http://copyrightnotice-ig.com/kutozirajugubigaremubvd9t.pdfIn PDF document text
    • https://xuzuvakewose.weebly.com/uploads/1/3/1/6/131637797/vexetemopimuku.pdfIn PDF document text
    • https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/9424908.pdfIn PDF document text
    • https://retinagarar.weebly.com/uploads/1/3/4/3/134319249/7109985.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/98dc9f031.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/bedifoxeg.pdfIn PDF document text
    • https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/wijojamelozovofera.pdfIn PDF document text
    • https://dotanivim.weebly.com/uploads/1/3/4/7/134705276/6685987.pdfIn PDF document text
    • http://aarbuz.space/boy_scouts_of_america_lawsuit_address6sjwx.pdfIn PDF document text
    • http://figufesivinex.22web.org/bubujojewoxizi.pdfIn PDF document text
    • https://kosonijuzar.weebly.com/uploads/1/3/5/9/135974682/sopupenavuto-mimivipe.pdfIn PDF document text
    • https://zobimodajozo.weebly.com/uploads/1/3/4/3/134340865/53c9a0ca7.pdfIn PDF document text
    • https://gojojiwegojefuw.weebly.com/uploads/1/3/2/6/132695574/kewigidejana.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/jiwazorutoro.pdfIn PDF document text
    • http://itverys.space/97566736890855gy.pdfIn PDF document text
    • http://instapresent.site/ayo_and_teo_reverse_freekg6l3.pdfIn PDF document text
    • http://frut-tree.site/87299576622psg87.pdfIn PDF document text
    • https://tidosivapozagul.weebly.com/uploads/1/3/4/3/134390518/bipedopa_bosuxux_vorusel_xufodobipix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gubogur.rf.gd/jikerezil.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_off0000e179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE179 5652 bytes
SHA-256: 8ddaf11c6c80055e8c177c184e7ea6288bc149fd81407e6e031aa5884da31b75
font_01_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 10184 bytes
SHA-256: b3656c50f285c89a24bd43d506e164c22e30b7f711d5ed66e76fc886af26bc13

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