Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a39631858f383ca…

MALICIOUS

PDF

31.3 KB Created: 2020-08-17 02:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff1c9fcda9a02dbf01e8d9601bb655cb SHA-1: c434c131661ebb5c3bfbe6d42a8116980f61a490 SHA-256: 9a39631858f383ca314829f5393a6948a20572e42bd365c61aca4eabb88dd7de
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, with multiple embedded URLs. The primary malicious URL identified is https://ttraff.cc/pify?keyword=anbe+sivam+tamil+movie+ringtone, which likely serves as a redirector to further malicious content. The document body contains garbled text but also includes 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.cc/pify?keyword=anbe+sivam+tamil+movie+ringtone
    • http://fuluto.criminallawyermissouri.com/uploads/1/3/1/3/131383629/vesepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/88286941796.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/zukesub.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/mewas.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0901/files/nenuzewemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mazasalekisupivujimesuzap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/66441965701.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/gonidofupiluli.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/2457470430.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/24759423785.pdf
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/gojevumoxewaxi.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_off00003e7a.bin
9d6f36a23b6c0ea99565fc8fb87ac83508a78db6e2159bf9dfb60297d727ddab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E7A 5196 bytes
font_01_sfnt_off00005010.bin
27946b2499cf0ab87ceb510ce31165119995a8b35c7fa212671ea47d86ad68e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5010 9612 bytes

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