Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e2c18c6d8b238e…

MALICIOUS

PDF

43.4 KB Created: 2020-08-10 07:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2796ae9694d14a412216f5ab032dd6a2 SHA-1: cc22a539459938fda6ff7592503941850b9337bb SHA-256: 46e2c18c6d8b238ef389b0d5fbfb2da860a1f006df950cb52b87408dcc481616
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=calicivirus+felino+patogenia+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com and other domains, suggesting a link farm or redirection scheme designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=calicivirus+felino+patogenia+pdf
    • http://fenome.shinestudiohairsalon.com/uploads/1/3/2/6/132696212/4a8a87336359f.pdf
    • http://files.ceasefirelive.com/uploads/1/3/2/8/132816195/tojunalanuref_linawimileje.pdf
    • http://files.farmflightaz.com/uploads/1/3/2/3/132303175/6978210.pdf
    • http://files.micheledewinton.com/uploads/1/3/2/7/132712206/1fe06c0547a8283.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/vilojolosofimisojafut.pdf
    • https://cdn.shopify.com/s/files/1/0437/8476/5591/files/revujimiti.pdf
    • https://cdn.shopify.com/s/files/1/0433/4429/8133/files/45981167166.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2214/files/sushma_swaraj_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4409/files/edit_text_and_images_in_your_file_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/couper_en_ligne_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/satofoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/60511673551.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_off00006d43.bin
9b0b7d47ddf6599b0d61e963fe99805ef8a6b1e0a3a0f148b2f792b1873f2ecc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D43 5288 bytes
font_01_sfnt_off00007f50.bin
ac93eda7be7b09b573bbe261b3c5fc7f5d7fc2e18af7fa6d7c87f003aa431157
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 9772 bytes