Malicious PDF — malware analysis report

Static analysis result for SHA-256 b16f0fd18e44fab5…

MALICIOUS

PDF

75.2 KB Created: 2021-03-11 06:09:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9693eb7163e312c995ee675f87be6cbe SHA-1: 32e5ddbd991729d9fa8b7959eb86b29ae368dd1f SHA-256: b16f0fd18e44fab5340a333e4f3f370e61a099d715030561d68b02b3d611bf13
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The heuristic firings, including ClamAV detection and ML classification, strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://maypoin.ru/award?keyword=bob+woodward+fear+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388416/normal_600b253ec23d4.pdfIn PDF document text
    • http://mirumumavetifun.mypressonline.com/wiveraxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450148/normal_5fda848e83b12.pdfIn PDF document text
    • http://finoginujowiwi.mypressonline.com/tax_rate_changes_for_2020.pdfIn PDF document text
    • http://jozebemi.iblogger.org/about_us_website_template_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469834/normal_5fdcc55e3d710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_6015d492ee9e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fcf6f3122153.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fivamoxopel.epizy.com/heraeus_group_annual_report_2016.pdfIn PDF document text
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_05195c4f01454ef4a17f79d5a21deb43.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eceb2358-5f12-4506-80f3-67cea66016a0/how_to_use_garmin_marine_gps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7fc74d3-61c8-48f3-a4c8-3af08add0ad2/40266890244.pdfIn PDF document text
    • http://pobuwejugu.epizy.com/55526667649.pdfIn PDF document text
    • http://toxisokipefofo.epizy.com/one_calculator_multifunctional_calculator_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d1965ea-fe30-492d-b377-1f4394a0a89e/47013035458.pdfIn PDF document text
    • http://jibimom.myartsonline.com/ecological_economics_download.pdfIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_47474280a33d4bd4b577285adca83082.pdf?index=trueIn PDF document text
    • http://musizaxodolof.epizy.com/printable_5-_tab_divider_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dfbb907-99f7-4bdd-9215-79b0c28858d8/72713173729.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_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 5140 bytes
SHA-256: bb3260d713c76b61298d8707fd9b7a8e4820771545b328031a63fc9612ac9232
font_01_sfnt_off0000fb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4F 10484 bytes
SHA-256: a4f388c828ac1f24f29e62c4adb7c85ca29e915ff006cca5a70c4650dd6ca131

Open this report in the interactive analyzer, or submit your own file for analysis.