Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f59f366184c47e3…

MALICIOUS

PDF

72.8 KB Created: 2020-12-17 01:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5489c9abf0e86908f062682e9ba9199c SHA-1: 179238d6adb057bc021ccabc91801de151b9528d SHA-256: 7f59f366184c47e330ce4c6fe0603cdf6d0da8f800d88af40702d72159cce697
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating it is likely a phishing or malicious content delivery mechanism. The presence of numerous external links, including one pointing to a known malicious redirector, suggests an attempt to lure users to malicious sites or download further malware. No scripts were extracted, but the PDF structure itself is being used to host and link to potentially harmful content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/aws?utm_term=frosty+the+snowman+sheet+music+easy+pdf In PDF document text
    • https://sugelazo.weebly.com/uploads/1/3/4/7/134767002/jekoxakeguvex.pdfIn PDF document text
    • https://vegipojefatelon.weebly.com/uploads/1/3/4/8/134876486/zasubofogawulu_timosixakipiwon.pdfIn PDF document text
    • https://vesemidibokopiz.weebly.com/uploads/1/3/4/8/134869856/ccc31c84833a.pdfIn PDF document text
    • https://pufetebad.weebly.com/uploads/1/3/4/7/134711346/kibaxipubaje.pdfIn PDF document text
    • https://mawakigimewu.weebly.com/uploads/1/3/4/8/134875352/652415.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7085545.pdfIn PDF document text
    • https://petabururumeje.weebly.com/uploads/1/3/4/9/134902787/toreviruwas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mejawiwomak/29038932375.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/aboriginal_australia_map.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/xagojizuxalogum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0568dae50a01458873bc/1606223210149/palazzo_rucellai_firenze.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/43503379415.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/haciendo_que_el_primer_circulo_funcione_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/woligonibusunijes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aebbb8467722f1dfa14b/t/5fc3e3cd3c02f22b9d84a1d0/1606673357253/lulugoniw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F2 5396 bytes
SHA-256: 6b1eb63bf84aa9b5119fe4727ee6a15136496a920e5fcf870fd29dffbeab3a54
font_01_sfnt_off0000e333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE333 10824 bytes
SHA-256: 02b57baa40ffa362bcf6dd219a83ead56f89c18764d590cf00fac8040a4134c7
font_02_sfnt_off00010807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10807 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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