Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d6d365d40668e2…

MALICIOUS

PDF

55.6 KB Created: 2020-08-21 23:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74231cc0a9d246af2eae0524f62ab421 SHA-1: 89596c4d8c9ca1d49a6ae84728051ca68b56af46 SHA-256: b9d6d365d40668e20b745ee4209b72e2e0c6607d7e7cf314caa9cce5b9464999
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=antimicoticos+pdf+farmacologia'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and keywords related to pharmacology, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=antimicoticos+pdf+farmacologia
    • http://files.lagunabeachkitehouse.com/uploads/1/3/0/7/130775432/a0be8338a.pdf
    • http://files.madtownrent.com/uploads/1/3/0/7/130739769/3142486.pdf
    • http://zetiso.waterloogutters.com/uploads/1/3/0/8/130873826/sowopupuzepere.pdf
    • http://files.sharonleegraham.com/uploads/1/3/1/3/131380915/nusador_beragoposozuz_rotejakazerob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/98155341671.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2242/files/79273835195.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/jivazevosukin.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4375/files/lusujumozale.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9171/files/bildungsroman_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/75019370354.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/39928193997.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/sazizulon.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/doxemamegesulolulizizit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/zidakufozatuf.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_off00009bb2.bin
655df6572abf7d9c4911bf128a97527a79d33ef2430f21aab988dcacef0bc24b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 5464 bytes
font_01_sfnt_off0000ae26.bin
28927d690d1a0d177d61361783f08de6e1385a690da1480d5c516613ba860bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE26 10440 bytes

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