Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6532895cf1fdc20…

MALICIOUS

PDF

70.6 KB Created: 2020-08-21 23:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f51440888c4831be168b851ed701b98d SHA-1: 0aaec56a303fe4576a8d6c6c3d84b74b4639792e SHA-256: c6532895cf1fdc2075911bcc0701fe9f9d0d9b09ed76857b0c7a7dd9512856ab
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to a 'world economic forum tourism competitiveness report', suggesting a lure to entice users to click the malicious link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for 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.com/pify?keyword=world+economic+forum+tourism+competitiveness+report
    • http://files.thefilmscientist.ca/uploads/1/3/1/4/131407695/2596080.pdf
    • http://files.acuartistry.com/uploads/1/3/0/7/130775471/bezosiruvugawijawov.pdf
    • http://files.occasionaldilemma.com/uploads/1/3/0/8/130873951/ca641e.pdf
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/my_roflcopter_goes_soi_soi_soi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/chemistry_college_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/cambridge_checkpoint_science_workbook_7_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/robazidevuralagikilulijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3852/files/ospf_and_bgp.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/define_selling_process.pdf
    • https://cdn.shopify.com/s/files/1/0439/3133/6859/files/iphone_5s_caller_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6571/files/ios_9._1_emojis_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/do_carmo_riemannian_geometry.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3992/files/7054751498.pdf
    • https://cdn.shopify.com/s/files/1/0446/9764/9306/files/age_difference_hentai_gif.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_off0000d7ea.bin
eed261daea6b59753bacf57a32860109b7a86c375c24414ed7c1f23720ff858e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EA 5164 bytes
font_01_sfnt_off0000e97a.bin
c4d291e9b12b727946abd8a144070732ea28b6db07d67c7c813b3163c3522d64
pdf-font-stream PDF embedded font (sfnt) at offset 0xE97A 10372 bytes