Malicious PDF — malware analysis report

Static analysis result for SHA-256 df77e96bc43847c1…

MALICIOUS

PDF

38.9 KB Created: 2020-08-26 01:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803f73b9fd8b39861f03726e9ded706f SHA-1: 9024a28a6471c0cdc7175c50a691fa7f2f00ffe9 SHA-256: df77e96bc43847c107973ad75540637ef7c07a7f24616f325929d0707a2f8e9c
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but one of the primary links, 'https://ttraff.com/pify?keyword=crown+xls+1500+amplifier+manual', leads to a known malicious redirector. This indicates a phishing or redirection attempt, likely to deliver a secondary payload or lead the user to a fraudulent site. The document body itself is heavily obfuscated but contains the malicious URL.

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.com/pify?keyword=crown+xls+1500+amplifier+manual
    • http://files.chazakbordercollies.com/uploads/1/3/2/7/132740805/babez-doxate.pdf
    • http://vixosi.fancyfreeblog.com/uploads/1/3/0/8/130873851/7334969.pdf
    • https://cdn.shopify.com/s/files/1/0443/2855/0556/files/forsaken_warrior_deadlift_program.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/volabodakomelewun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/contract_of_employment_template_australia.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/presion_de_las_cavidades_cardiacas.pdf
    • https://cdn.shopify.com/s/files/1/0457/3426/4998/files/sheep_heart_dissection_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/4737/8344/files/reporting_binomial_test_apa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/cardiac_arrest_algorithm_acls.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_off00005927.bin
7ef70d03d988389aa03e35eea4eb0ee92305ce19dd009d09bcf6c03651f0a37a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5927 5428 bytes
font_01_sfnt_off00006ba3.bin
79aa3b3b3fcff96dcca78572adeddd4d0441e39785dd4ea74be32cb403a97e89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 10652 bytes

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