Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19adb284db3ff26…

MALICIOUS

PDF

67.7 KB Created: 2020-12-19 05:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d134fe1782a20cbfa9804f7d5d43fe76 SHA-1: e7417ef02e58caf107a20e1fbb6559f3cd429684 SHA-256: b19adb284db3ff265fdbc1da3ed2e6eec5251339d77a3d357fea31c317369dfd
214 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, with one identified as a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites. The presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' further support a phishing or malware distribution attack pattern. No scripts were extracted, but the overall structure points to a link-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=lloyd+in+space+characters
    • https://fewarajinu.weebly.com/uploads/1/3/4/2/134235366/99d2743b6b9.pdf
    • https://janokapaw.weebly.com/uploads/1/3/4/3/134329878/1318322.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sepawi/vazelapalipuzamepulib.pdf
    • https://static1.squarespace.com/static/5fcdedf089ef447dc9d1d86e/t/5fcf8d283fa051062b4bdb8d/1607437609976/plant_vs_zombies_mod_apk_download_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/7b3a3849-c6d1-43ee-b7bc-749a74a75e65/bizebijodonurokutibamo.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe15cb18e72e5fdb9ed8c5/1606292942968/formula_50_book_free_download.pdf
    • https://uploads.strikinglycdn.com/files/ee7607f1-82ac-4fbb-ace3-f46c170e9786/bibomitepog.pdf
    • https://s3.amazonaws.com/fixararololu/fmla_guidelines_for_school_employees.pdf
    • https://s3.amazonaws.com/tabobujimo/rofabojusamedeti.pdf
    • https://s3.amazonaws.com/sezebepit/mcdougle_middle_school_staff.pdf
    • https://s3.amazonaws.com/wurivuve/adobe_indesign_course_syllabus.pdf
    • https://static1.squarespace.com/static/5fc5b109405d5340f34a7138/t/5fcd8d271e1a4d7de143e09d/1607306536292/43744769417.pdf
    • https://s3.amazonaws.com/zuxadol/strength_of_materials_diploma_notes.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc81.bin
36f4f0c2cecf647453a16f2d788218156e582b603e8412c3927a407a73489b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC81 5204 bytes
font_01_sfnt_off0000de36.bin
64dbd7101f5048d92ebb15dbf8535a4ecf4f3aa12fbef01ef793946907072c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE36 10420 bytes

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