Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c5511fd564360b…

MALICIOUS

PDF

42.9 KB Created: 2020-10-26 04:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45994b91286142b48c4a6d9f0ebd52f9 SHA-1: 49ec9746fe7110742c763d2a2e1df929d2cbbdb1 SHA-256: 59c5511fd564360bc1bdb0a344cc153525a57e28b356205fc20a7e80c80ab55a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are part of a large link farm, suggesting a spam or phishing campaign. The primary malicious URL identified is https://cctraff.ru/123?keyword=2020+chevy+malibu+manual+mode.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/123?keyword=2020+chevy+malibu+manual+mode
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/4918653.pdf
    • https://bidutujube.weebly.com/uploads/1/3/4/4/134403342/mizapawulovigo.pdf
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/2b341.pdf
    • https://direfuxapiw.weebly.com/uploads/1/3/4/3/134371974/visazopox.pdf
    • https://muzaromiv.weebly.com/uploads/1/3/4/3/134380281/divizizokawas-xonapuzivuzatux.pdf
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/wupesixupa.pdf
    • https://rojumiladikeju.weebly.com/uploads/1/3/4/3/134315163/34ea1296.pdf
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/4719945.pdf
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/wurugaxisif.pdf
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/maruj.pdf
    • https://wojegapemepuwa.weebly.com/uploads/1/3/4/0/134096127/zejugutiz-jufoj-retisi.pdf
    • https://pasutexovemas.weebly.com/uploads/1/3/0/9/130969198/355d6.pdf
    • https://lepuzabokagat.weebly.com/uploads/1/3/4/3/134333079/bikolev.pdf
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdf
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/degifigatuto.pdf
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/vadaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0497/1275/8963/files/xovimokagon.pdf
    • https://uploads.strikinglycdn.com/files/586db310-0812-4d01-899c-eba1934c4edc/wixobubusus.pdf
    • https://uploads.strikinglycdn.com/files/af5b12e7-7f6f-4201-b3d6-5a29dc06b102/3867366374.pdf
    • https://uploads.strikinglycdn.com/files/43d25a96-8853-4ec2-94b3-a0aa1cf08a75/muwufis.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006797.bin
f6dc53f62ef0a4c342313ce93e2ed0c236ba36064ce94c7980609fab0aea21d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6797 5388 bytes
font_01_sfnt_off000079c0.bin
a0970bd1e11500a864826c940006dea6405f5deb1de43a2ce6ed8d6f37545641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 10644 bytes

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