Malicious PDF — malware analysis report

Static analysis result for SHA-256 7596fe575a4b2a7d…

MALICIOUS

PDF

48.5 KB Created: 2020-08-16 19:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd302267276a3a9ce1447491f1dd382 SHA-1: c188b6160d5478da95a8e4e8cdf58b6f08c35e11 SHA-256: 7596fe575a4b2a7d7a11be7dc31dcff4a6fe4fe524769830ae0bc1eeb5e72619
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially corrupted, contains text suggesting a lure for 'Java jdk for mac os x' and a call-to-action phrase, aligning with a phishing or scam attempt. The primary IOC is the malicious redirector URL.

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=java+jdk++for+mac+os+x
    • http://files.sustainabu.org/uploads/1/3/0/7/130775126/zokogebadevej.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/39937902309.pdf
    • https://cdn.shopify.com/s/files/1/0435/0119/1328/files/abb_abacus_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/xojedinegewinunuforolubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/75002318496.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/43334727831.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/alberto_moravia_horalka.pdf
    • https://cdn.shopify.com/s/files/1/0432/6244/3683/files/30328550094.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/programa_aprendizajes_clave_educacion_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/nazca_lines_mystery.pdf
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/pdf_architect_activation_key.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_off00007ef1.bin
0c1d6dd080af16a34b1852ef43f59525a5a59d95b3c435466ab8d13e9379c3f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 5392 bytes
font_01_sfnt_off00009146.bin
13c5570be7540d7082ec666b80aee2c78c8fbcc12b5bcddba8dfe9217e8ec027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9146 10916 bytes

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