Malicious PDF — malware analysis report

Static analysis result for SHA-256 46de33f7e0a56630…

MALICIOUS

PDF

59.9 KB Created: 2020-11-05 16:13:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f2e9831924b721c474afb1c0947b0b76 SHA-1: c770dc45256b0ed7bc33a0b9bf12eb0d152a6335 SHA-256: 46de33f7e0a566304a688d9e13097fe6f00b41ff3befb6565c789d2aff8d134b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification suggest a malicious document designed for redirection, likely as part of a phishing or scam campaign.

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://traffking.ru/aws?keyword=kelly+kindergarten+homework In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_5f8ccb8e6c100.pdfIn PDF document text
    • https://murudogukezopo.weebly.com/uploads/1/3/4/3/134320821/pinozepajab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426410/normal_5f9b0d68e297e.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/703d443fe3dc9d9.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/6be3d578-9bbd-4cd3-b230-7d3342c38368/gorisuvonariranorekim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6185a359-b056-409b-ba47-70044e60d320/78774605482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd8f70b-ce5a-4647-8c20-d8a32d31a136/the_lords_of_creation_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18812b6b-c41b-4d23-8e56-b3fd4f604a4a/cara_carding_amazon_di_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93835cad-1dd3-44dc-8135-6acc0322fa1b/sopesinebimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35fa7a07-b08d-4809-b1f0-c75a50b37fcd/firofasasagikeguxalebotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f26116f-0489-4d0f-bb3d-f01101751d23/mufilisalogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a166dd72-a2ae-4e19-b2b3-3c09d068d52c/80437964205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f2a1ea-e3b8-47bf-84ab-4c852f94fda6/cathay_pacific_darbinieku_ceoanas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb26762a-8aaf-4698-8d58-8b5c351b75f4/24674305735.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_off0000ab72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB72 5288 bytes
SHA-256: 3e4500d61343b66e162fd50486e593ff6e33fe7dc550a0744975b35d35ba91f4
font_01_sfnt_off0000bd58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD58 10380 bytes
SHA-256: 3de43d62e97fcb58c765ab8fd05310901bb395d3e1732f920ff16f0de901deee

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