Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9fc20ade379184a…

MALICIOUS

PDF

61.8 KB Created: 2020-08-22 01:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 762556387037c01a21bebd5f1a064e64 SHA-1: 7c2c923a60a2c779eb81087dedc11651f469761e SHA-256: b9fc20ade379184a9ed23841316e56cd82aec3a016868ed978ebd08c76f4f5e6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=berliner+platz+3+neu+pdf+%25D8%25AA%25D8%25AD%25D9%2585%25D9%258A%25D9%2584'. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with 'https://cdn.shopify.com/s/files/1/0433/9495/7475/files/gawikuviwariwopero.pdf' being the first listed. The document body, though partially corrupted, also contains the malicious redirector URL and several other PDF links, suggesting a lure to external content.

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=berliner+platz+3+neu+pdf+%25D8%25AA%25D8%25AD%25D9%2585%25D9%258A%25D9%2584
    • http://lomewewi.middleforkimw.org/uploads/1/3/1/4/131482975/zurobonawenuxazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/gawikuviwariwopero.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/jujuxedapubekulunimatajaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/amos_spss_25.pdf
    • https://cdn.shopify.com/s/files/1/0445/3980/5855/files/gardner_denver_air_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/4288212332.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/linked_list_queue_c.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1979/files/important_synonyms_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/82529831238.pdf
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/ranged_combat_5e.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/cpace_content_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/6045/9685/files/health_canada_food_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/xunaxuzipuwedububowim.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_off00006676.bin
3361d08d1e7beb61cef5e2a8394de15520eb54486c6286baa320fb5bdde93d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 4892 bytes
font_01_sfnt_off00007721.bin
62c5eb61daf58f0a4a404895dfe9e3d1da300ac82e83013ee811ddf5ffcf75f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 16688 bytes
font_02_sfnt_off00008e69.bin
3d0ede146dbebbf78a14c5f9cf0c1df0e34502a47a7520689d6a838a292eee2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E69 16068 bytes
font_03_sfnt_off0000bee2.bin
106c1d0b24979215fe3e94ebe4c5d8d034e734e08076b5cb1a5965559282b6c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE2 17836 bytes
font_04_sfnt_off0000d9c4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 4324 bytes

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