Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf10b6ad1cbb278…

MALICIOUS

PDF

46.7 KB Created: 2020-08-30 15:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 328b17ad66feaab795bfd4963f0ba18f SHA-1: 2101eb5a7b68a4066f1be401a87c9e5b5318e031 SHA-256: 3cf10b6ad1cbb278853ff728233276bee484e666f90e8c8ddc04b0cd6b89e55d
128 Risk Score

Malware Insights

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

This PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely to appear legitimate. One of the primary links, however, redirects to a known malicious domain (ttraff.cc), indicating a phishing or malware distribution attempt. The presence of a 'download' lure further supports this. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into downloading potentially malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=gamp+5+guidelines+free+download
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/deep_learning_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/34392574742.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/customer_service_position_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/carlill_v_carbolic_smoke_ball_judgme.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/valkyrie_crusade_6._1._0_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9027/2675/files/angielski_rozszerzony_wiczenia.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/sunoparonutizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/tawiwirejekezapakuxara.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/84461203690.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/moworizogoma.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000696a.bin
d9e7edb037db855286bed3917184ce47cdec13a8764d917339381e2e865ed571		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696A 5408 bytes
font_01_sfnt_off00007bc7.bin
f91cbffc85397ef3e14dcf7ece3a051a67a9959e54390064d5474f994a62f95b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC7 10796 bytes
font_02_sfnt_off0000a01f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA01F 4324 bytes

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