Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ac66f4f9bb2e51…

MALICIOUS

PDF

39.7 KB Created: 2020-10-26 01:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1ecb07fc0a9ec4e917e53036b0fa7ada SHA-1: 3061db6a310b79e1f96cb375d30d5b4bc23f8e1e SHA-256: 07ac66f4f9bb2e5187df49471efbe55ee10dd79c8801bf35bb17941959ff1074
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, that redirect to potentially malicious infrastructure. The primary URL, 'https://gettraff.ru/aws?keyword=contoh+business+plan+makanan+pdf', is flagged as a known malicious redirector. This suggests the document's purpose is to drive traffic to malicious sites, 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/aws?keyword=contoh+business+plan+makanan+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5f8f9835cbf92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382003/normal_5f9353c997935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f87241159132.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/d048891.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/8781522.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/ruxef_nugamuba.pdfIn PDF document text
    • https://bowonusafepa.weebly.com/uploads/1/3/4/3/134319531/5fbd4.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/1256fc30-24f6-4596-ac66-511b250f0110/sopuwozoxanodoxulutag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c402c9cf-ef61-4775-a14b-710e582e736f/protein_filler_for_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6859acd3-b8cb-4b34-8fb8-8c38af9406bd/75831765605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2638/2500/files/que_es_el_aprendizaje_colaborativo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9972/5209/files/motorcycle_chain_breaker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ed16792-786c-4f19-bb5c-88461e0b0e41/kusexuletonaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b5c46f7-8d26-4b37-b992-6800fd960b8b/palilalosurupe.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_off00005ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDE 5292 bytes
SHA-256: 21fd43678f38194d548d9053231e9ee3478e74056aedd0cb5d978c7d7fbc8c08
font_01_sfnt_off000070b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 9800 bytes
SHA-256: ec9f3a9a8821986ceb8e500c470bf06a82ebcf35fdb541763da1de700ba08c69

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