Malicious PDF — malware analysis report

Static analysis result for SHA-256 37874b6f2a98aa35…

MALICIOUS

PDF

37.2 KB Created: 2020-06-05 03:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d2c5770079cb18bb2a5a2772c6cc3c2 SHA-1: 2eac16e8e9482cb5f8ccd4529885da6960438d15 SHA-256: 37874b6f2a98aa35ddca7f5d13fd5d1a032fb67ece236ab25fca86e53accc9d1
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF SEO link farm. The primary heuristic indicates an external URI pointing to 'sybistech.net'. The document body contains a mix of corrupted text and URLs, suggesting it is not intended for direct user consumption but rather to host or redirect to other malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://sybistech.net/uploads/1/3/2/3/132303075/132303075.html#bhagwan+ka+video+song
    • http://midsouthgaragedoors.com/uploads/1/3/1/6/131606128/bomawovujixod-ligudanatedum-kipelaxuw-zabavemure.pdf
    • http://journey-to-alaska-adventures.com/uploads/1/3/0/2/130288458/gipuwi_ditupizusafa.pdf
    • http://mx.asao.org/uploads/1/3/1/3/131384281/lewurikabopoturu.pdf
    • http://mta-sts.mx.juanfreakshowcaparas.com/uploads/1/3/0/7/130739517/3579235.pdf
    • http://pascalpr.com/uploads/1/3/0/4/130483539/mewodidogotix-zufitoj-jukajagazivarox.pdf
    • http://plantaby.com/uploads/1/3/1/4/131436971/474980f9a640b3b.pdf
    • http://fastlanen20.com/uploads/1/3/2/3/132303009/9093192.pdf
    • http://linghsiang.com/uploads/1/3/0/4/130477249/zerogigesopoguw.pdf
    • http://isaacdelislefoundation.org/uploads/1/3/0/3/130323415/lesozajaluwala-jebisetafekadu-kivip.pdf
    • http://sybistech.net/uploads/1/3/2/3/132303075/terms.html
    • http://sybistech.net/uploads/1/3/2/3/132303075/dmca.html
    • http://sybistech.net/uploads/1/3/2/3/132303075/policy.html
    • https://pegepev.files.wordpress.com/2020/06/82666098786.pdf
    • https://toguzafozar975898281.files.wordpress.com/2020/06/98929973767.pdf
    • https://relopupuxa.files.wordpress.com/2020/06/9039470091.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_off0000523c.bin
bfd456510f91c440d95f02f86950cb3a89b76ae1d25223f3fc8a42392a691eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523C 9748 bytes
font_01_sfnt_off000073e0.bin
3cb22bd10b1c3b5cef30f7d4330131a9fd5799929fe7dc9862c122a4b220f75b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E0 6444 bytes

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