Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8bf8f4b2eff992…

MALICIOUS

PDF

47.6 KB Created: 2020-11-02 19:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a7e50f1eb9e800a6780534abdf19a855 SHA-1: d5fb1d1faef5c8f21e722417d00675109f4ca4cf SHA-256: 7e8bf8f4b2eff9921c4b5dfca89b01f648395d0461704a736ac255131cbabc2a
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector, both associated with the lure of a "Roblox bloxburg money hack script". The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the primary URL leads to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive traffic to malicious sites, likely for further exploitation or phishing.

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/strik?keyword=roblox+bloxburg+money+hack+script In 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://uploads.strikinglycdn.com/files/b30f0281-0225-4197-a93d-fb035ae05762/gagiwirujefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d52f09-dcf8-459b-97f3-4c000d06105b/xufomorug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4db9ec6-6dcd-464e-834d-0724ca1b4e78/lotoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59e1a48-a94d-4b77-9db5-0dbfa186d18b/97390623754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d61e3bfc-9634-4b03-b402-304aceb5502d/whispering_bay_resort_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/cover_letter_assignment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2603edf4-6a4c-422c-b544-d4a262e152e6/letter_of_good_standing_bank_account.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62afc955-1edc-4f12-9aee-b8937b1f2aa9/90857177454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7853/files/2_digit_subtraction_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/89753288396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f579e4eb-27a8-465d-9f60-93817ab56210/austin_and_jessie_and_ally_watch_onl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8588/7167/files/lds_handbook_2_updates.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_off000064c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 5612 bytes
SHA-256: 1a3e4a8f911c18bc42d0d38825d7b8d8e2bd760b94a5452aabf2c71fe43a155d
font_01_sfnt_off000077b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B2 13964 bytes
SHA-256: 023cf3398e3367f62eded43b78c582e3c101cd3141b8f6ea0f1d93f13bd7e36d
font_02_sfnt_off0000a398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA398 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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