Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e32b87ab9641603…

MALICIOUS

PDF

55.1 KB Created: 2020-08-14 15:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aeea192b5bedfea18868ee920ba353d SHA-1: 9fd3222492d4e636dd3ade47a7226966245b3107 SHA-256: 1e32b87ab964160353c922c5f01114e5a8951060d91d16cf276f7e88ec10443c
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious content, masquerading as free movie downloads. The primary malicious URL identified is ttraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the string 'Bengali movie sathi hd free' and the malicious URL, reinforcing the lure. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a tactic to obscure the ultimate malicious destination.

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.ru/pify?keyword=bengali+movie+sathi+hd+free
    • http://files.smithfieldarts.com/uploads/1/3/0/8/130874370/mudidosawukapif.pdf
    • http://files.oxfordunderarmour.com/uploads/1/3/0/9/130969322/suvar.pdf
    • http://files.lifechurchoftitusville.com/uploads/1/3/0/7/130775342/girugow.pdf
    • http://files.edtcadcam.com/uploads/1/3/1/3/131379792/daromugunado.pdf
    • https://cdn.shopify.com/s/files/1/0437/7057/7058/files/sefopoxudigobesusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/nefan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8044/0213/files/wifopibiforiwojadonusudaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/1546/1285/files/79877784138.pdf
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/above_the_line_promotion.pdf
    • https://cdn.shopify.com/s/files/1/0428/3301/9047/files/19558806515.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/25943792860.pdf
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/acca_past_papers_f8.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/39780833462.pdf
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/calcium_chloride_msds_sigma.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000633c.bin
4b25656b204d5a11d71ecbc685b6f73141b0978e56f4e684ac83fa88436427bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633C 5220 bytes
font_01_sfnt_off000074ca.bin
048cefd967cab45721d896235bf08720adc2a337ca9c30c9e36362d860ef24b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 6120 bytes
font_02_sfnt_off000088a2.bin
ebe6033b5d91c0eec6bf6a7482113821134b9322d5c9cdd2aff6cc6556729072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A2 10188 bytes
font_03_sfnt_off0000abd0.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD0 16164 bytes
font_04_sfnt_off0000c0e9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E9 4324 bytes

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