Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5448a99c9d887d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 18:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c635f9a050de61f3d7b57ddf091494ab SHA-1: 44c4dbf32385f7326d4d176a94272dc3165f486b SHA-256: 3e5448a99c9d887d720ec1255738d9e1572be35b66c0a7f718517795ed1bc717
152 Risk Score

Malware Insights

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

The PDF contains a lure related to Schengen visa applications, directing users to a malicious redirector at 'https://ttraff.com/pify?keyword=schengen+visa+form+france+sample'. Additionally, it hosts a large number of SEO-optimized links pointing to various PDF files, many hosted on cdn.shopify.com. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector confirms the intent to lead users to harmful 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.com/pify?keyword=schengen+visa+form+france+sample
    • http://xuwetefen.cookechiropracticcenter.com/uploads/1/3/0/8/130813765/xatixuroviv.pdf
    • http://fetovabe.icybag.net/uploads/1/3/0/7/130775934/xozuvisemaza-pokenar-risanakojo.pdf
    • http://files.yummymummyemporium.org/uploads/1/3/0/8/130874379/xewubuduwinijo-wasoziriza-jafiniworariji-rozefomuzugavu.pdf
    • http://files.thebutterbar.org/uploads/1/3/0/9/130969080/1662507.pdf
    • http://bezetu.thecut.studio/uploads/1/3/1/0/131070847/sujeferuwovu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4040/files/how_to_make_enderman_farm.pdf
    • https://cdn.shopify.com/s/files/1/0428/2204/1767/files/bavosav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/date_sheet_mdu_5th_sem.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/anatomy_and_physiology_digestive_system_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4491/2802/files/wamotubuzetuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/java_avl_tree_implementation.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/lolifisapobuwenojosenaja.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/fuzulanopazezora.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/web_developer_portfolio_templates_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/32274541296.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7033/files/paroj.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/principles_of_antibiotic_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0450/5042/9598/files/big_data_architecture_book.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_off000070be.bin
8f92f47edb88929fc2c2d0ff19eed437a4ca974a89102ba078648498881ebda8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BE 5592 bytes
font_01_sfnt_off0000839d.bin
17b22a48431dac030e888bcc2d721754c4f90186798f4961a01edc70a213dd64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x839D 10304 bytes

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