Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecfc10d77436ba5a…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 00:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4986309a58e41601240c762c51d728e SHA-1: 6044052ef8412db0c7c18b65cee374b92cd7090c SHA-256: ecfc10d77436ba5acb90cf4a02e168fe59a3ee258b8d53383f98dca86afbad02
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. While no scripts were extracted, the sheer volume of embedded links points to a deceptive or malicious intent, likely to lure users to compromised sites or for SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bhakti+ringtone+radha+krishna
    • http://files.halfmoonagile.com/uploads/1/3/0/9/130969389/2825428.pdf
    • http://files.novanuae.com/uploads/1/3/1/4/131407469/pupanuxelematugetuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/role_of_liver_in_carbohydrate_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0450/4177/8838/files/tech_bulletin_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/21481101304.pdf
    • https://cdn.shopify.com/s/files/1/0434/5534/8888/files/tajilomono.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/42966536733.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/sample_commercial_lease_proposal_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/lezanepizowakagefezejegib.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/vexaruge.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/food_diary_sheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/27728749311.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042e5.bin
32c4eb53cca7e3c3b33be9a599c11cad15a680d6718e9c75934667014a01cd9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42E5 5168 bytes
font_01_sfnt_off0000546e.bin
502c0261adaea8729cfd31510d80875a0f56be2e700174468ad1d2f39eba2386		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546E 9344 bytes
font_02_sfnt_off000074c3.bin
6dff86d1ae210118c0154c96e9ebe5ebd852db6e3b8235acd775587099303c9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 7948 bytes

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