Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14b4d801299cbfa…

MALICIOUS

PDF

45.1 KB Created: 2020-08-29 04:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe101111bf1ad9ba050d4e52a3a54bbf SHA-1: 3ffe6b940e012951b3fd6bd175681494bbbf1d20 SHA-256: b14b4d801299cbfa03c0a4ec1daff46aacc07abba74cafcdac9ad5af6b096d23
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.ru/wix?keyword=food+fantasy+aluna+guide'. It also contains a PDF_SEO_LINK_FARM heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0463/1009/7053/files/glass_s_guide_car_valuation_australia.pdf'. The document body, though heavily corrupted, contains text fragments that suggest it is intended to appear as a guide, likely to trick users into clicking the malicious redirector. No scripts were extracted, but the presence of a malicious redirector strongly suggests the PDF is a delivery mechanism for further malicious content.

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/wix?keyword=food+fantasy+aluna+guide
    • https://cdn.shopify.com/s/files/1/0463/1009/7053/files/glass_s_guide_car_valuation_australia.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/buxisazoxutigab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/accuweather_vancouver_wa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/competitor_analysis_research_report.pdf
    • https://static.usrfiles.com/ugd/b8c837_027320e90758453b84a9d3a429a73735.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1850561e9a84fc1acdab69ed9269913.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff64073e6f094029b9ea28720b173fae.pdf
    • https://static.usrfiles.com/ugd/b8c837_85b29df8fdac477abceb403d37dcb543.pdf
    • https://static.usrfiles.com/ugd/b8c837_70c3ed30593944dfab658a37850a33e9.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9332/files/66078481806.pdf
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/anushka_sen_instagram_videos.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/lelatejejovezozevovi.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_off0000669c.bin
96d286bf0407d743cd55a8a0afd56212e3e60519a05a5ffa1e39e87549912e12
pdf-font-stream PDF embedded font (sfnt) at offset 0x669C 4920 bytes
font_01_sfnt_off0000777d.bin
aaa471d072bc25442f777adff6b656faa5b3e9870cf82d2f5c22fa2cd60bb284
pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 10264 bytes
font_02_sfnt_off00009a16.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A16 4324 bytes