Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61ed49c8f6ce8dd…

MALICIOUS

PDF

40.4 KB Created: 2020-08-11 20:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff015df8441e2452778cd69c47d89014 SHA-1: fc66b4c34fda1a50e8f393890b26f55edb76b01c SHA-256: f61ed49c8f6ce8dd49568e7255034418bb146de9cfd19854cd60a4bde744eab5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=autodesk+cfd+simulation+tutorial+pdf'. This indicates the document's primary purpose is to trick users into visiting a malicious URL, likely for phishing or malware distribution. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning campaign to drive traffic to potentially harmful content.

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=autodesk+cfd+simulation+tutorial+pdf
    • http://files.firstpresbyteriangreensburg.com/uploads/1/3/2/6/132681392/watevipusuboz-ponixobalu-voxare-bibosezewakesaz.pdf
    • http://files.natural--living.com/uploads/1/3/2/7/132710601/7720991.pdf
    • http://files.capriliciousjewellery.com/uploads/1/3/0/7/130739490/1809953.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/3291103425.pdf
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/bd_chaurasia_human_anatomy_for_dental_students.pdf
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/fedobagirel.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/14866901389.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4044/files/vatonanuroj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/10674725179.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/vajizerowavi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/bangladesh_railway_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/17231629370.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/17581947186.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/4278305199.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/filokalewejunimasejipi.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_off000060df.bin
82b691b1a0b8300245d21809c5f9c412f342c4a1b61d65f7bdc1d4b7f0036250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 5356 bytes
font_01_sfnt_off000072f7.bin
921d8571e9c2246fbbf5499b43055acb66b2f00000625fa28a07223bafa06018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 9908 bytes

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