PDF static analysis report

Static analysis result for SHA-256 a86cf10a7ff31c3e…

SUSPICIOUS

PDF

42.9 KB Created: 2020-11-09 15:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 773e7405f8df6034abc5578b6e660925 SHA-1: 11902ba657f309a8354bed88d3e84af21800a06f SHA-256: a86cf10a7ff31c3e733b9065e43ffb868672a0afd124c9fd1e2782532e2d5ee3
56 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as suspicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?keyword=comptia+security%252B+601 PDF link annotation
    • https://susetizumuru.weebly.com/uploads/1/3/4/4/134461935/d9c28dcd3.pdfIn PDF document text
    • https://wazuwivanesigov.weebly.com/uploads/1/3/4/4/134431766/jorisumulo.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/d1c1279d-d6d3-4b01-b2cd-c46b0739e4b0/waterford_village_apartments_ma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff4ae8b8-6a5b-4be4-88db-490370e52b10/5146691296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/678ded74-0f10-4a8b-9466-a758084f84fe/johnson_funeral_home_thief_river_falls_mn.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/22742667002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ea6809-9107-4739-9fab-b558f5776fd0/espn_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/clinical_examination_nicholas_j_talley_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/business_communication_process_and_product_6th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecee8452-3930-4fcc-b5cf-941ffe47d9d0/kulelizegudekojemugapi.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/calendario_liga_19_20.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/9255447542.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/pipemezafofogamasigo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A9 5400 bytes
SHA-256: f30573b21e23e73a2cd834090450c8f2618d547590dc2d7b50337785337c3c8f
font_01_sfnt_off00007af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 10608 bytes
SHA-256: b9d50711cc47ae81a7eea17d7d342f4e92e294306faed23f005548cec03dbd95