Malicious PDF — malware analysis report

Static analysis result for SHA-256 92935cf7fe376deb…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 13:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 508e94aeef6f66168b363a63572d8d58 SHA-1: 4594382c3ed0d5933644156496412f6b41cefc77 SHA-256: 92935cf7fe376deb1ebc08fbe3987354d247761cbae54a5fdf0eaceacd9532ce
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'print booklet format in word 2016' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a malicious redirector indicates an attempt to deliver a secondary payload or lead the user to a phishing site.

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=print+booklet+format+in+word+2016
    • http://komum.fabricofthefield.co.uk/uploads/1/3/2/7/132712376/tipatonomusivijoto.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/kawai_piano_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/93679726000.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/botuzuvozawabeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3069/files/kuzebezazewonodirekega.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/62213893287.pdf
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/whatsapp_for_nokia_e72_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/manixikudemijegorokivog.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/91929687323.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3829/files/zuragaxesunakoveniwikumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/subtracting_fractions_unlike_denominator_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/math_101.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/tasatepapepotalasafa.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_off0000641e.bin
0c9d54877fe033f8ceabfc8fecc43c7d8b8b9a00ddc8252590221b834ff25bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641E 5652 bytes
font_01_sfnt_off00007754.bin
638adc573c58004da18e38683180e2a513aa08387126d4312fbcd70866a75038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7754 10024 bytes

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