Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8ca4a5b29a7a8c…

MALICIOUS

PDF

46.0 KB Created: 2020-08-25 19:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f98cf9b408fae6377cf7ee2538c0bd7 SHA-1: fb3521796d2d0bdf2a0ff74efe9513a1cc42844a SHA-256: dd8ca4a5b29a7a8c51a281d1686c4f7f32135f35c9aac4555ff6cc8d9f855405
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=motorola+surfboard+sb6120+manual', is identified as a redirector. The document body, though heavily obfuscated, contains this URL, suggesting the PDF's purpose is to drive traffic to this malicious link, likely for further exploitation or phishing.

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.cc/pify?keyword=motorola+surfboard+sb6120+manual
    • http://files.karollee.net/uploads/1/3/1/4/131408029/6619650.pdf
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/35890163858.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39086675177.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/minecraft_pat_and_jen_hunger_games.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0243/files/zuzewiwuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7776/files/malimopajoribu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9713/files/jatizenajoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6482/files/sites_to_nigerian_movies.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/pabibiwawuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/aadhar_card_xml_format.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/angry_birds_2_2._0_1_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/twinkle_twinkle_little_star_mozart_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/43207097094.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/96270954807.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/firalet.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_off00006fbf.bin
408f3a909d5770d4b8e6d85b8788d2711ed4ba23c4f9b66eba2519a634ea655b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBF 5680 bytes
font_01_sfnt_off00008301.bin
a94be6b05753a5813ae680a447e90413964da8aac9be658d80db02e8d5f08c87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8301 11588 bytes

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