Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc94fd7a5d531cd…

MALICIOUS

PDF

51.5 KB Created: 2020-09-21 04:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26bc6a1813d48e4e589197ff3407007e SHA-1: 69ac017ac78e19c933eb2182bd8ac38fe1abf491 SHA-256: 2fc94fd7a5d531cde87cc79e091a7fe560174eae4dfce7fd061887fb8bc22051
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=christianity+sacred+places+of+worship'. This indicates an attempt to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to shopify.com, but the primary malicious indicator is the redirector. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure beyond the redirector's presence.

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://ttraff.link/wix?keyword=christianity+sacred+places+of+worship
    • http://vuwijakej.karilagandancesociety.org/uploads/1/3/0/7/130740558/639132.pdf
    • http://files.dieteticintern.com/uploads/1/3/1/1/131164052/3670471.pdf
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/prevencion_del_cancer_de_estomago.pdf
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/speaking_activities_in_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/34057356166.pdf
    • https://cdn.shopify.com/s/files/1/0481/3881/3589/files/best_manual_espresso_machine_2019.pdf
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/59156144692.pdf
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/21463965332.pdf
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/appendix_1_request_for_fee_waiver_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9769/files/81761815311.pdf
    • https://01f9daa9-369f-4abd-97ba-14d220d541da.filesusr.com/ugd/804ff6_257892181af2422888a92e1712676263.pdf?index=true
    • https://1cdcea1c-14ab-4a69-811b-12bc81eaf7ec.filesusr.com/ugd/ce0e6d_bb1cc1a79ae04b3dbe4e3018ab3c8bb4.pdf?index=true
    • https://26f42596-fc8e-4eed-b288-be7a29a885e8.filesusr.com/ugd/0f1814_776e9e1bc468440e936180e02a40e969.pdf?index=true
    • https://c26a2587-64f3-4c2e-be53-be2bc5c0d108.filesusr.com/ugd/83e584_93e827fdd6c74d90a32aecde6364e6ad.pdf?index=true
    • https://fbe8dd6b-71ef-4375-ae79-a08fb8fc3b47.filesusr.com/ugd/bc79a4_0efd86e461cd47288c41ca9603f32ce9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007401.bin
8993f82a25806ad3d9da7f432f66c552903ca804e58294ceb1fbd31eafff642b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 5344 bytes
font_01_sfnt_off00008638.bin
e0d899225a1c138d0127ed048afe3013cf770e9fb58ec5d2c7f435f8a92abeb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8638 10716 bytes
font_02_sfnt_off0000aa74.bin
cb1af6d0223c138935846abd687bdd96ff610b83f1a47505297aa0395db2d91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA74 16468 bytes

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