Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e508d6d8a6a69d4…

MALICIOUS

PDF

45.2 KB Created: 2020-10-30 22:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cead6baaf377fb1f2a52713d28ab73c6 SHA-1: f56066b8c7efe38972bffe8e93236242b8561cb6 SHA-256: 5e508d6d8a6a69d40ce79a89ce59124ec03663dab4cfe8efb31474559782fdb6
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'Garmin nuvi 1450lmt update' and embedded URLs, suggesting a phishing lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector URL is a high-confidence 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://gettraff.ru/strik?keyword=garmin+nuvi+1450lmt+update In PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/bedul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f88947d7f9c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_5f8fd59acb32a.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/9d40084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f8f69dcc2ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f9575b774cb7.pdfIn PDF document text
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/1b738e53b04eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f8f91e5f2aa8.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/joriz.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/zidosozawok/karya_siddhi_hanuman_temple_dallas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b280f555-9bf0-4539-9a10-d3df310a18d0/78338368477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c23af6e-2882-42ba-93d2-9464d2d8e922/68255034094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd23c515-f61b-4291-aeb0-2429784ab042/tokakorofufimi.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/56144960467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47938b91-6e92-4601-ab13-e3b4b0c84db4/5389491740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc0b7896-8f93-4478-91b6-20b65480c25c/jolixeminanupo.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_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 5196 bytes
SHA-256: a7be4746b31396dfa42c53d17f5be6336ab5db4131c63ee10234a4f3dee08355
font_01_sfnt_off00007406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7406 11248 bytes
SHA-256: 7d1d9efdf90f94b0f39667b27ea491ebe7d14d9457dba6ceaac946a0f5e73262
font_02_sfnt_off00009a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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