Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c103b1e683234e…

MALICIOUS

PDF

38.6 KB Created: 2020-11-03 20:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5a8f1fa157a1db9746b91b6b64a632c7 SHA-1: 33828723977d2817ed377be3d4485299a724ca4b SHA-256: 76c103b1e683234ed3e8384017aca77fa3c33ae73db521bdf148f17193cdf7a9
94 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to external URLs, specifically advertising a Minecraft download. One of these URLs, 'https://ggtraff.ru/123?keyword=minecraft+pe+0.12.1+apk+download', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into downloading malware disguised as a game update. No scripts were extracted, but the presence of malicious links is a strong indicator of malicious intent.

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://ggtraff.ru/123?keyword=minecraft+pe+0.12.1+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f9c6deec2fe5.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/gelovejoxab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_5f94ce384db9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f8706aa7d37c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b3de494-0566-4f63-b0df-35630408e8dc/garcia_effect_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/red_panda_context_reverb_pedal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5047063b-5c13-4a0c-bb20-535214b002a3/bejenovonututegiripeziv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c17ff5-b328-4b1e-a0f1-8f3ac44f8d7c/bathandbodyworks_black_friday_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/xekowuzixowepid/wedajipunawuxuxezele.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/galanz_mini_refrigerator_manual.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_off0000569a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x569A 5488 bytes
SHA-256: f686853b95a2ea49b17066f57827e37a57369dd7a1ba496565cf92dba455c721
font_01_sfnt_off00006982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6982 10636 bytes
SHA-256: 9556d384f48d8e0c842a9579c630d1611f44bbd391996afd89ad0fff68430509