Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd23cfa498b6b48…

MALICIOUS

PDF

46.9 KB Created: 2020-08-18 14:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dea5f4eb2854d9cb687a543902fe2e4 SHA-1: ad19b7013880f19ee0c9023c6da36859b936e15e SHA-256: 1dd23cfa498b6b48fee2821100344ff073f222f39ce2cee28f8dfd2ad18263ba
140 Risk Score

Malware Insights

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

The PDF contains a lure related to an 'Australian visa application form 1257' and includes a link to a redirector service. This redirector is part of a link farm, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains the malicious URL and references to Shopify links, likely for hosting benign-looking but ultimately malicious content. The presence of a callback lure heuristic further supports a social engineering attack. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=australian+visa+application+form+1257
    • http://devat.tfadfw-resumehub.com/uploads/1/3/1/4/131483083/06231.pdf
    • http://files.fairytale-wedding.ca/uploads/1/3/0/7/130739330/4468847.pdf
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/96815122091.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/89775898907.pdf
    • https://cdn.shopify.com/s/files/1/0454/6687/8102/files/ielts_writing_test_task_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/disney_songs_piano_sheet_music_easy_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/34900334340.pdf
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/fodiluvokegemujiru.pdf
    • https://cdn.shopify.com/s/files/1/0439/3687/4651/files/weebly_teaching_portfolio_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/algebra_2_textbook_florida.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_off0000754f.bin
d7e59b583da4dca96834482655a8c9026623d21cb42b313041ead2d417cc6ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 5596 bytes
font_01_sfnt_off00008852.bin
552f147b1b3dee7fd03942cdad11707120db4e5c569d31eda343bc132a0d75a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8852 11204 bytes

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