Malicious PDF — malware analysis report

Static analysis result for SHA-256 3615449078a9a45a…

MALICIOUS

PDF

66.4 KB Created: 2020-11-24 12:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1203c9c2607f13d2accc42dd7694dba0 SHA-1: 6a4c6e81ae61f081297d3e19550bb84559b68ef0 SHA-256: 3615449078a9a45a5c51e74aa7d93e7224eee2e1bc6893c909dc113e20701519
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing attempt disguised as a budget planner. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=simple+budget+planner+template+uk In PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/7909875.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/9c521.pdfIn PDF document text
    • https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/fexaboliwodalav_runagokagigik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481069/normal_5fa6ba4817c17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_5f9d64973e6bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ruzumeb/sets_worksheets_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/vien_construction_fairfax_va.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/the_gobble_gobble_turkey_wobble_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e0fc26c-89a2-4525-9d9c-8f2b68d721aa/jodo_poveikis_strumai.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/sikemufotaranalatumajem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB99C 5180 bytes
SHA-256: 3e7cf03296d028c9afd26a793b9a8ae2288bcc473a477527ffc55c4185acc8f8
font_01_sfnt_off0000cb0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0F 10576 bytes
SHA-256: 4433cf51dea4727bdc8aa5e9613edbdca26b3171ee87efd576c23f1c31ba28b5
font_02_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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