Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccba66bd69b63ae7…

MALICIOUS

PDF

44.1 KB Created: 2020-10-23 09:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2fc2ca80d438a460b687a6e6e2a7cef9 SHA-1: 3d2cc91b3c22a74cbdce99d8b3489d6478ea3a55 SHA-256: ccba66bd69b63ae7861a5f688f286cd207d85e054b76589b986f9dfbd7d856a9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic strongly suggest an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

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.
  • 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.
  • 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://gettraff.ru/123?keyword=coding+decoding+bankersadda+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f8a841fbbccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f89e0636a232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f90780e67a13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380076/normal_5f8fd387a3f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378623/normal_5f920856215a9.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/sebuputigisotu.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/vakiwusi_zerarupuzapesu_zuxorivikabedok.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/kezugi.pdfIn PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/3716253.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tugumeb/libro_fisco_agenda_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/criminal_justice_system.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bepukodejukopagat.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/cbse_class_12_physics_practical_experiments_list.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/86744175761.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/savinakepot.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/noxijasedomepeluzegil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c06542-21b4-4314-888c-85134f330992/bafepogazuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0dc8aa0-c5a9-4299-8204-8958dc039822/dozonufejesisenesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b525b0-a82d-42d1-be57-af98dc23f664/winchester_model_37_410_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03fd68b4-f3a0-4070-a028-99bba586fc67/37865417101.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/active_directory_tutorial_windows_server_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/birexiradavaninafojezi.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/61705288049.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_off00006d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 5400 bytes
SHA-256: 38a7b083cc417549a9aa3910fb7d65a0a866631c17e8b2c5758f8ca23648ffbb
font_01_sfnt_off00007f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6B 10372 bytes
SHA-256: 751f2030baa12b9b6b50ec08244cbd160990200094c9540140a6ae1b11f32ed2

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