Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5289e80b2f95ed6…

MALICIOUS

PDF

39.8 KB Created: 2020-08-22 07:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15a458e80451965d495912e3267ae282 SHA-1: 733759111b370aa4c72998209ada025749ad25e4 SHA-256: b5289e80b2f95ed662e614e14dda6339ad6157172e597b161647e97bb5fe25cd
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading an application. This suggests a phishing or social engineering attack aimed at tricking users into downloading potentially malicious software.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adaway+pro+apk+latest
    • http://tuxexa.codyjwoods.com/uploads/1/3/2/8/132814930/konebopopexuwidu.pdf
    • http://files.cameronayres.com/uploads/1/3/1/0/131069915/fitaloxojewiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/43899868149.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/lavodefabesoduferi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/vumebivanuzokopiwef.pdf
    • https://cdn.shopify.com/s/files/1/0458/3289/6675/files/deschutes_river_fishing_report_odfw.pdf
    • https://cdn.shopify.com/s/files/1/0438/1065/2317/files/27268952443.pdf
    • https://cdn.shopify.com/s/files/1/0458/6120/8217/files/free_budget_excel_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/string_to_decimal_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/64127175429.pdf
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/81784519377.pdf
    • https://cdn.shopify.com/s/files/1/0440/3966/7877/files/gudiwapuluvaraxapa.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_off00005f08.bin
36ba6d8d2726be578841fcc11a6bba248dfa766403aee9a5e1eefa4c46a55363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 5200 bytes
font_01_sfnt_off000070de.bin
b3bdd3a7f34e5858599a10a7a784695eb1a0d34168a066ddb749b36a68c3f8ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DE 10012 bytes

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