Malicious PDF — malware analysis report

Static analysis result for SHA-256 282fa80d9d7be42c…

MALICIOUS

PDF

81.1 KB Created: 2021-02-24 23:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 02c2cb2d16f835d26a4afb67d1eb7d1e SHA-1: 954b777170c580c04414a006ed29aafdeb90cfd0 SHA-256: 282fa80d9d7be42c5876038dab7fba63dfc9e47c7dd9dd4ad78bd1f691ed2fad
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content, likely a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=cuanto+es+30+gr+en+tazas PDF link annotation
    • https://kuxifegofemiza.weebly.com/uploads/1/3/4/8/134865321/vumigunina.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/zasopego.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/what_is_pilot_arc_on_a_plasma_cutter.pdfIn PDF document text
    • http://inostrana.com/dirty_emoji_pictionary_answer_keytfmhw.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/rapapeluwosunosizorebaj.pdfIn PDF document text
    • http://ueuniti.website/292304831129y8tz.pdfIn PDF document text
    • https://moxatabik.weebly.com/uploads/1/3/4/8/134885740/jimofejamofew-kanomazebar-moridotezugow-sisama.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/53443310113.pdfIn PDF document text
    • http://emirofficialzm.com/digital_content_plan_template9q8s8.pdfIn PDF document text
    • https://bopojebokup.weebly.com/uploads/1/3/1/4/131408204/gexaxozivakopi.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/tulilufewumagarapi.pdfIn PDF document text
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/busutod_wogigizirakasax_komojerotowaz.pdfIn PDF document text
    • http://card2card-perevod24.site/xajigfwtrz.pdfIn PDF document text
    • http://heartcenteredequestrian.com/kifuxulepuwigidikomaaubgo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisijuvod.myartsonline.com/painting_with_a_twist_dallas_tx_75209.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/9093015940.pdfIn PDF document text
    • http://zoniguzetixan.epizy.com/lost_maples_foliage_report.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/89816725488.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_off0000f8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E8 5084 bytes
SHA-256: 0429f60a3dcc9820ca7351f5cb008bf03cd1bc34837be0f59db39d59c18f6f29
font_01_sfnt_off00010a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3F 14528 bytes
SHA-256: b1eb5f8a4c64ac39096450360264716450b6517774adca70a0358dc8875412fd

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