Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba468177dcdcf988…

MALICIOUS

PDF

44.9 KB Created: 2020-10-16 08:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c396cc9787bda0226ae627d30b5c536f SHA-1: d95641b0784236d5055a059df51cf2a56234a192 SHA-256: ba468177dcdcf988fd14ecb908d8151a3ff0b5f031ba6412f2382df2281f7127
154 Risk Score

Malware Insights

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

The PDF contains numerous links, masquerading as biblical outlines, which redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies the primary malicious URL. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a compromised site, 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://cctraff.ru/pify?keyword=bosquejos+biblicos+para+predicar+y+ense%25C3%25B1ar+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f88c0b76cc76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f88b45d4cfd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5f88782f9126a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f872e4c9dbb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f885408379ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f876249dab88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f87c2a9836ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8750ffe9e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f89184ea39af.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://cdn.shopify.com/s/files/1/0429/6045/3785/files/nabiwafitibul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0685/2759/files/observer_dependent_block_craft_pick_up_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c3aded-422c-427f-b15d-7ddaf59be905/39715643256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a19be2-acc8-47a8-a7c8-a34e1341923a/kazumewavinazibitunal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea19fe5-a79c-4678-9f2f-642a06c98a70/bipesazopuvoxanutizem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/321d5aa7-5e34-4d05-a201-5ebf859a162b/4176324478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0597e2c9-df87-44ae-bf69-12ce863fbb3b/84861492359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7206662-3dda-42db-8757-6d902a51ad51/47659636226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74197d7-8896-495c-acce-74b0cc6d2b60/risevoxegeju.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_off00005a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A63 5656 bytes
SHA-256: 2c1f275b03d3a26dc912bdae21b75f52e84325a65d5a499834948fc11a8145ee
font_01_sfnt_off00006d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D63 12864 bytes
SHA-256: f3aa593e4b3e60550796d2e47b4749a6420c48c16507ea1dc39668821be4909e
font_02_sfnt_off000095e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95E2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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