Malicious PDF — malware analysis report

Static analysis result for SHA-256 a39720093d3e90c7…

MALICIOUS

PDF

34.7 KB Created: 2020-07-10 06:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4474af38845f081e706ce3703bd535b6 SHA-1: a9b7345153d5c98306030e069ff01c222401c6f3 SHA-256: a39720093d3e90c7710b51713a0c07927f7f7febaa883a36a9f9c9d472105546
120 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, masquerading as a user manual. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that at least one of these links points to known malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of similar links are present, likely to distribute malicious content or engage in SEO abuse. The embedded URLs are the primary indicators of malicious activity, aiming to redirect the user to potentially harmful sites.

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/wb?keyword=sma%20sunny%20portal%20user%20manual
    • http://files.barbourpromotions.com/uploads/1/3/1/4/131437319/gedubuv_xusoruwud.pdf
    • http://files.benyoungerman.com/uploads/1/3/1/4/131437454/sukivararezigagemi.pdf
    • http://files.trinitycenterphiladelphia.org/uploads/1/3/1/3/131398541/8491800.pdf
    • http://files.dancaffreywrites.com/uploads/1/3/0/9/130969532/224770.pdf
    • http://files.coonafit.com/uploads/1/3/0/8/130874035/fd316916e62.pdf
    • http://files.mootingsyndicate.org/uploads/1/3/1/4/131483253/lewotidedimitufemini.pdf
    • http://files.bradymikusko.com/uploads/1/3/2/6/132695329/6f322.pdf
    • http://files.spiritualityanddementia.org/uploads/1/3/1/4/131437454/rudof.pdf
    • http://files.troyboatclub.org/uploads/1/3/2/7/132741194/kaxobu_jelavun_vuzatovuse.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://files.ferryport.org/uploads/1/3/0/9/130969386/figusidijemikifesi.pdf
    • http://files.congsupport.info/uploads/1/3/2/6/132680998/duwak.pdf
    • https://zimixukegor.files.wordpress.com/2020/07/jidutasix.pdf
    • https://purupale.files.wordpress.com/2020/07/39149380922.pdf
    • https://xajilaxaluv.files.wordpress.com/2020/07/visuremuber.pdf
    • https://fipabira.files.wordpress.com/2020/07/kufixopapu.pdf
    • https://mibodoku.files.wordpress.com/2020/06/21470023966.pdf
    • https://bujiwilofife.files.wordpress.com/2020/06/sonafazunogonalirebob.pdf
    • https://lozurimi.files.wordpress.com/2020/06/perujeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.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_off00004e51.bin
d2fbee1a7228144fed2a1fa7547e0d70f6b5756f2fe73da8fa37dd999ae5d59a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E51 5004 bytes
font_01_sfnt_off00005f33.bin
2173e99ed89389d976d9aed41d90aa4618772081a11f71f6577c79a2e49575f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 8936 bytes

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