Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a70c6dd41ee34aa…

MALICIOUS

PDF

119.6 KB Created: 2021-02-14 10:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a5d04ff1a9a84ee60bd5dce09371f587 SHA-1: fa77701bcfa03122e064bc6ec4151826a526de19 SHA-256: 3a70c6dd41ee34aa9e5741c85b3f9b066c13093cd4e4ff8006a3ab85cb6abe05
136 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, using language related to prizes and parcel delivery to deceive the user. The presence of embedded URLs, including one pointing to a keyword search related to purchasing online advertising accounts, suggests a phishing or fraudulent scheme. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving redirection to malicious websites or further phishing attempts.

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=buy+adsense+account+fiverr PDF link annotation
    • http://zipujesilan.22web.org/berloni_catalogo_cucine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_601904aa18413.pdfIn PDF document text
    • http://najapizarut.22web.org/bodice_block_pattern.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491686/normal_5ffeaa945d88d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481825/normal_6024a1dfa0b7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_5fdae915730f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_6028bab98f82f.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/lanorolowu/cough_syrup_glee.pdfIn PDF document text
    • http://volopupe.rf.gd/occupational_hazards_in_dentistry.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/97738667448.pdfIn PDF document text
    • http://kefekebew.rf.gd/pojixafudedunadogeb.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/ketogene_dit_erlaubte_lebensmittel.pdfIn PDF document text
    • http://lagefow.epizy.com/16987476197.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/vevosumuger.pdfIn PDF document text
    • http://dedamedasobime.epizy.com/lubiwawarumukas.pdfIn PDF document text
    • http://judimavazamo.epizy.com/vifuboji.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_off0001979f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1979F 5196 bytes
SHA-256: 3349a01297c3db32b300fecc84527e0190bf4988a4a551021f0e7348810d7835
font_01_sfnt_off0001a971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A971 11620 bytes
SHA-256: 5361b98cf5ea1fa0d7880ef2a9fd43082bdb7375f72db8c365f0ea61025035e7

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