Malicious PDF — malware analysis report

Static analysis result for SHA-256 851705c0dfc2cdaf…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 00:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a01187032cf1220bc9d8aea6e1bfc9 SHA-1: b39eb92d388135033f4a9fb198eb4eb70cfeae5b SHA-256: 851705c0dfc2cdafd28820304d4e143f1c5c3301fa97a8cebefbd0733e109efd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ebook+akuntansi+dasar+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading further malicious content. The PDF also contains a large number of external links, many of which are to Shopify, likely for SEO manipulation to increase visibility of the malicious link.

Heuristics 3

  • 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.
  • 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=ebook+akuntansi+dasar+pdf
    • http://files.barcelonasailingcharter.com/uploads/1/3/1/6/131637606/13ce8e33.pdf
    • http://fefijut.thefurnishedboudoir.com/uploads/1/3/1/0/131070450/telegog.pdf
    • http://files.buttehomelesscoc.com/uploads/1/3/1/4/131406701/0b845223c69.pdf
    • http://files.warandthecanadianexperience.com/uploads/1/3/1/3/131379231/pivetufid.pdf
    • http://files.aeskelly.com/uploads/1/3/1/8/131856937/3847096.pdf
    • https://cdn.shopify.com/s/files/1/0440/0149/3142/files/neonatal_sepsis_nice_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/afrontamiento_del_duelo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2869/9553/files/mysteries_at_the_museum_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/gyarados_coloring_page.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1532/files/morphology_of_flowering_plants_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/41377068965.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/xejawogagojuzexuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/17393500512.pdf
    • https://cdn.shopify.com/s/files/1/0440/7577/8198/files/organic_chemistry_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/72249109651.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_off00007f21.bin
fe3f5864d2d35feb4a1ca6438e73db869c53b4a5b371686bb15863ff40190c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F21 5164 bytes
font_01_sfnt_off000090be.bin
8aaf045892ec25e8bafc73f580ab4369d47ee067facff4d0ddb671f50e3d3ca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90BE 10192 bytes

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