Malicious PDF — malware analysis report

Static analysis result for SHA-256 a229dea51769c554…

MALICIOUS

PDF

64.4 KB Created: 2021-02-09 17:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2c2fd9f0f7dc4b288e088ec2a9edb4e8 SHA-1: 0c1ed1c306d6ea708f140478546513dd99aedce9 SHA-256: a229dea51769c5544c770d40afb9f9ee28f245d8eec8e044fb9184344933751c
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/aws?utm_term=wilson+jones+8+tab+index+template PDF link annotation
    • https://cdn.sqhk.co/tutabalero/eSFtGae/891240120.pdfIn PDF document text
    • https://divetuguwopad.weebly.com/uploads/1/3/0/7/130739619/5221033.pdfIn PDF document text
    • http://rowaxuxot.22web.org/oru_kuttanadan_blog_audio_songs.pdfIn PDF document text
    • http://usacarins.com/solimisiruwifufexaretokarvvk7.pdfIn PDF document text
    • http://naturka.space/paisabazaar_credit_score_passwordyijx6.pdfIn PDF document text
    • https://cdn.sqhk.co/fabukujeb/cjjgigj/tenusugumubipovudigu.pdfIn PDF document text
    • http://stingeksoj.online/45723746033uw5fd.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/7685457897447unc.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/1ihgi5V/hop_valley_mango_stash_calories.pdfIn PDF document text
    • https://pitefomut.weebly.com/uploads/1/3/2/6/132682610/9453569.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gorefoverotiw.epizy.com/export_excel_worksheet_to_vba.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/36564505307.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/penume.pdfIn PDF document text
    • http://kesajuwigiferu.epizy.com/35718993000.pdfIn PDF document text
    • http://sudiwoke.epizy.com/kizesirovo.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_off0000be19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE19 5500 bytes
SHA-256: 7d38b975d64be5e0f3bd4f701744bbfa4505f6ab65d7db78928b71beb11dcd5d
font_01_sfnt_off0000d0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CF 10676 bytes
SHA-256: bfd696b6f0f061b96aabe5bcf603925e33b0a221429729d69fcba62cd641f82a