Malicious PDF — malware analysis report

Static analysis result for SHA-256 599b2e4d2cc26539…

MALICIOUS

PDF

38.3 KB Created: 2020-11-04 04:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2ea9d29096554c50c278a7b402be76c0 SHA-1: db14e242c8a3a8dad1301259a44bbc4d225337d9 SHA-256: 599b2e4d2cc26539fec26d25d0cabab43f215bdb637503d107e6b813ca82c000
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/strik?keyword=i+think+in+texting+language+abbreviation In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vifiduw-vudodu-gotozuzes-wigalomi.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/posepimokizavazun.pdfIn PDF document text
    • https://varovugunigode.weebly.com/uploads/1/3/4/4/134480676/sezobe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5f9ca6074609b.pdfIn PDF document text
    • https://notupazepikinis.weebly.com/uploads/1/3/4/3/134382888/kabejosit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8966af191af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5f9f1a4611317.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/lixasifasi/ccna_3_chapter_5_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/vijubofegagewesitak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c47e5fc0-196c-49c8-8b3a-b9f5c014dcf9/34282801501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4b0234-b474-45c2-9415-529f13f2b235/49789459323.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/295163799.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_off00004bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCC 4920 bytes
SHA-256: 86d7d56c82b555c342d3918f27e704b119fce11bdd37989717b348ebb1606e17
font_01_sfnt_off00005c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 9924 bytes
SHA-256: 57359e76f41cb66062f7543b6e9b4559fa4fa256c2665b54392e3666adfeeee6
font_02_sfnt_off00007e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176