Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01fe6b1fad2138c…

MALICIOUS

PDF

98.9 KB Created: 2020-12-24 13:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 123dc253c7b6b0d53f7f57ce6aba7d8a SHA-1: 7491656bf18742518fc115785b9b6727b1c4fcce SHA-256: e01fe6b1fad2138c4ad1524ea33b626a309c9b2d8b354e9037c832e617887e84
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ClamAV detection and ML classifier also indicate maliciousness. The embedded links suggest an attempt to direct users to malicious sites, potentially for phishing or to download further malware, aligning with the 'Pdf.Phishing.Trojan' classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=movies.+com+bollywood+2017 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fd0b26f98b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421788/normal_5fc1ab7526747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422877/normal_5fb2a62f8254d.pdfIn PDF document text
    • https://xisovunegukizak.weebly.com/uploads/1/3/4/8/134868464/4472600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443342/normal_5fc2d961ca637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492897/normal_5fda94d41c9d5.pdfIn PDF document text
    • http://www.opentle.orgIn 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/d4b43972-d1c7-4969-8f29-329998fae6be/how_to_remove_curse_enchantments_minecraft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41758da0-6f7b-458a-836a-84babd83f7fb/68890983008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75bbbee9-0f60-418c-a626-cd4a2b60d545/vavumare.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/consultar_imei_para_saber_si_esta_reportado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71b8088c-da89-43f9-af3c-072d7e8d85cd/the_betrayal_bond.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8476d05b-ce53-4bb1-b483-d16165164300/welab.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011875.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11875 15728 bytes
SHA-256: 697c225fcfe64d521c6e98eb255aadc99d3b807b2e51128ea08eb67020ed26fe
font_00_sfnt_off00010531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10531 5616 bytes
SHA-256: 1bbfab6ae96ed3b02c7ac8d219fc94fd9dc803880249ada2f43b8fdcccefa70e
font_02_sfnt_off00014363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14363 10864 bytes
SHA-256: 91963c898fda30b85f138554defd2efe8e1683d64709ab1b0f2085b63b1f2a8e
font_03_sfnt_off0001689b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1689B 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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