Malicious PDF — malware analysis report

Static analysis result for SHA-256 6925db31466d0c39…

MALICIOUS

PDF

54.5 KB Created: 2020-10-26 14:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 13fb4dd123ce9f0bf325cea541827d7d SHA-1: d85fd7efdeb05b85bb773f3ee84cadeea6a235d5 SHA-256: 6925db31466d0c3967c0f9d00d356f94ce68a332731f3a4f260c6194c06a6129
114 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/aws?keyword=ayushman+bharat+bhopal+hospital+list+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/47317124650.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/descargar_diccionario_biblico_holman.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/mebonubinuxovomumikal.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/72360381324.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/aula_de_innovacin_educativa.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/75108037548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac452f21-165a-4067-9b76-e2e7b454e093/13473167409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd963e85-0557-468d-ae8a-7d6308734331/wagesobifemosupewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c7af56-784b-46ba-8280-0ac2a7639c74/88890475508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560671a7-b9c9-4965-9027-2169825e8191/pokojekowagexem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee70aae-5426-46c7-9205-1bc39f6abf8b/fatamowovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153484e2-b710-40b9-b859-57c530d6ef7f/78989616748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7119c6ed-614f-4627-a8f7-ebd1fc8538ee/63466686704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daee259f-9d24-429a-a70e-4a7c48eaa318/sagowiberol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475038de-be4d-4080-9be1-1a4292b8a0df/filepuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/pesobevivupizogazi.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/lesimemurupamisemadinudil.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/99980710751.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D5 5512 bytes
SHA-256: 22002403948449abcddd23cdc84f14828764a83e13db3a50d3d723cbc542e2c4
font_01_sfnt_off00007c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off000087bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BF 10936 bytes
SHA-256: d9423ff844f3a0d184efb50348894cf296f8c21c174f39d59f95b30103a672aa
font_03_sfnt_off0000ac74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC74 9984 bytes
SHA-256: bc958281d230520cdd1a2e9a430b836d405f4891807239e06ac3733795977568

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