Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88e67403f52b04f…

MALICIOUS

PDF

46.9 KB Created: 2020-07-09 02:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f73c65ffc0853b241e5320b6ea9a610 SHA-1: 236e3b40274e45b914ba474e06becc06e407e114 SHA-256: a88e67403f52b04f1ceb64b1849d97ca01e759a1fbd1cb745627e22bfb38a5be
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious domains and redirector infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that at least one URL leads to known malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The document body contains text related to economic data, likely a lure to disguise the malicious links.

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.com/wb?keyword=data%20pertumbuhan%20ekonomi%20indonesia%20pdf
    • http://files.freeheartclinic.com/uploads/1/3/0/7/130775744/49298f83004c00.pdf
    • http://files.bomfitness.com/uploads/1/3/1/4/131438840/butazek.pdf
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdf
    • http://files.wbxztv.com/uploads/1/3/0/9/130969405/mawuwi-zulad-bogunan-lezumakowav.pdf
    • http://files.hussamalghamdi.com/uploads/1/3/0/7/130775751/31b9f3b1a641f2.pdf
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdf
    • https://lavasotesug.files.wordpress.com/2020/07/mifuvaxonewapisoruremijov.pdf
    • https://tiwelopo.files.wordpress.com/2020/07/pekunubosafipadu.pdf
    • https://xuzubika.files.wordpress.com/2020/06/34628537887.pdf
    • https://pusivogaj.files.wordpress.com/2020/06/rekomowekulikaxenepaburiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.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_off0000762c.bin
884287846ff605d83a55656e4846053b0408f7783ca67ed1bd92c23b8763ec1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 5332 bytes
font_01_sfnt_off00008818.bin
61857d8f63345cc3377387d9dc4356c9f3519cc73d6354dfff41931d523bb2f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8818 11516 bytes

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