Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a68bc2332a2058…

MALICIOUS

PDF

63.8 KB Created: 2020-10-31 04:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7a3ed83ebb2a24c63feae433d9661422 SHA-1: c59ea7de09fb62c6fc7b341f48f5d05e8d09e05e SHA-256: 36a68bc2332a2058509d46d572d560b8e94fe9a3309833a001f13b02fb455ffa
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.me/pify?keyword=usps+drop+box+near+me+minneapolis In PDF document text
    • https://wegotutitupal.weebly.com/uploads/1/3/1/4/131453182/potowobewurad-gupavadak-sirip.pdfIn PDF document text
    • https://zigizawinowola.weebly.com/uploads/1/3/4/4/134457077/4987815.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/pinitifedojes_betowudokinezav.pdfIn PDF document text
    • https://vosaxoro.weebly.com/uploads/1/3/4/4/134469305/xebuwamuvexakaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f88b6359c6c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f87292b5bc2a.pdfIn PDF document text
    • https://tonurokekar.weebly.com/uploads/1/3/4/4/134456200/749d93bbfd26a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f91340312df9.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/2624916.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/560f3b4e-1c2a-48fb-b8b8-d65094bc3d92/the_kabbalah_unveiled.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/52400297975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab363ec-e3f5-455b-b645-f17e7e898c5d/jivobutamotoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be0f346-3514-4fc0-853d-b2911972e437/jopuxabomipelow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/212364f2-8c1c-4863-9040-64b1a623fe94/27077847245.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000cd97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCD97 21632 bytes
SHA-256: df578c444eea64281fd58883f17141f255030495627267ee099a164fab65036e
font_00_sfnt_off00009583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 5304 bytes
SHA-256: a7e8c2a15d785e8fa359e60677dc21196bb4019dbdd04b509706e211d69f6461
font_01_sfnt_off0000a775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA775 11184 bytes
SHA-256: 767caefe369e5808385926f417481c86e3764c7eee158af4139a65459df396a2

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