Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66f072991c8a3c0…

MALICIOUS

PDF

50.5 KB Created: 2020-08-23 11:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf2fff22c946037a895e8175a7d46f6 SHA-1: ebfb0d9c025e0e0818aac3514aa3b5c0d8221dc6 SHA-256: c66f072991c8a3c03cd3535a5fcd395ecb6dd7c6ba9cbd2fbac46ef2060ae57a
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and references to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning. The presence of a visual download button lure further supports a malicious workflow designed to trick users into clicking the malicious link.

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.ru/pify?keyword=bonetti+magnetic+level+gauge+pdf
    • http://files.road2fullframe.com/uploads/1/3/0/8/130813643/27ad95b0273b95.pdf
    • http://files.mentalhiccups.com/uploads/1/3/2/6/132681028/3689820.pdf
    • http://naravap.countitalljoyce.com/uploads/1/3/1/4/131408071/3054356.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/fitted_cotton_cot_bed_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/fosizasifelowawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/linksys_wrt_160n_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/1505/7056/files/advanced_batch_file_programming.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/50808137912.pdf
    • https://cdn.shopify.com/s/files/1/0450/8942/3525/files/basic_english_grammar_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/1179/1257/files/25920671223.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/voritawala.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/exercices_sur_l_article_partitif.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_off00006cfb.bin
b013c0a9039c2bad776c900ced4f7beb7bade22b769df595b17524595d35b5e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFB 5308 bytes
font_01_sfnt_off00007f02.bin
bd79aa68545ff01230e7f46fe5f7057ac80e45871acf0e032bb51ee358e868bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F02 13644 bytes
font_02_sfnt_off0000a7c5.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C5 16204 bytes

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