Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1a605a90e2cfaf…

MALICIOUS

PDF

57.6 KB Created: 2020-08-10 21:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a95a4a2935f61202b7daed768e9ab15 SHA-1: 6f1af805e13b21471144deb3059c89cb221ab95e SHA-256: 4b1a605a90e2cfaf537b10900c88b22411e4c8b92d8ca8cff258a877bf5ad3d9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=mechanism+of+action+antiepileptic+drugs+pdf. This suggests the document is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=mechanism+of+action+antiepileptic+drugs+pdf
    • http://files.washnword.com/uploads/1/3/0/8/130874154/rafizetenuvaso_xerekawal.pdf
    • http://files.indianaguitarcompany.com/uploads/1/3/1/4/131406258/9b54a8df740891.pdf
    • http://potasure.chroniclesofanoverthinker.com/uploads/1/3/1/4/131453501/f5405ee3ff.pdf
    • http://files.ukcitizenshipbyinvestment.com/uploads/1/3/0/7/130740298/9427040.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/parunofumibetib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/56360710079.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/mudosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0933/4683/files/automatic_door_opening_and_closing_system_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/ramonarabu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/bank_clerk_exam_books_free_download_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/76814547131.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/50229839784.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/bejevobujawakinoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/agenda_2020_para_imprimir_gratis_portugues.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a366.bin
942b6c9ccc4082552343fd5affeae068aadda3e115d2bae1ee3afcda078b8f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA366 5572 bytes
font_01_sfnt_off0000b62b.bin
49ca48b2cb1f66ef8170bc406ceb8f2917e8bd6577ad12ec7933ac81bc67d23b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62B 10292 bytes

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