Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a8e9d491967f0e…

MALICIOUS

PDF

34.8 KB Created: 2020-07-10 05:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485c9aa6a9814a92faa211e4822ffb95 SHA-1: 76017b66ce0f44dea163a0928ff4234cad3c4be7 SHA-256: 82a8e9d491967f0ec1225bb71e38a619b0558d738b9031d84e1ac2f6b88e2aac
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link to a known malicious redirector, disguised as a microwave manual. It also functions as a link farm, pointing to numerous other PDF files hosted on various domains. The primary intent appears to be directing users to malicious infrastructure through deceptive 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/wb?keyword=whirlpool%20microwave%20wmh31017fw-0%20manual
    • http://files.deannastrasse.com/uploads/1/3/0/8/130874305/mipipusa.pdf
    • http://files.wegnerauctioneers.com/uploads/1/3/0/7/130739463/0a523072.pdf
    • http://files.a2therapyworks.com/uploads/1/3/0/8/130813025/tipikemege-gogenajuzuzuga.pdf
    • http://files.wakingthedead.org/uploads/1/3/2/8/132815175/damupunaxexu.pdf
    • http://files.evolutionrattery.com/uploads/1/3/2/6/132695516/silej.pdf
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.pdf
    • http://files.arkjprogram.com/uploads/1/3/1/4/131406274/baruti-xukitinapabuz.pdf
    • http://files.lewiswarburg.com/uploads/1/3/1/3/131379115/vaxikofojenitovozex.pdf
    • http://files.wesleyantheology.com/uploads/1/3/0/8/130874544/76514.pdf
    • http://files.steveinfo.com/uploads/1/3/1/0/131070379/2415530.pdf
    • http://files.artartine.com/uploads/1/3/1/4/131437147/6261767.pdf
    • https://wumegubutil.files.wordpress.com/2020/07/91268721935.pdf
    • https://nizulaxowamo181495606.files.wordpress.com/2020/06/525762489.pdf
    • https://vimajuzerox.files.wordpress.com/2020/06/28616471027.pdf
    • https://jetufaru.files.wordpress.com/2020/06/5243181927.pdf
    • https://pawisizepetu.files.wordpress.com/2020/06/85507701683.pdf
    • https://jazutog.files.wordpress.com/2020/07/setixujidire.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifivejeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nosisuzamozozi.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_off00004a66.bin
01e3f09745836100930ff26f29f5fa43b645b8b3f600321c314f5f2126f594a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A66 5512 bytes
font_01_sfnt_off00005d1f.bin
cc8d7e11acac4bbce4288e2e8ce859e52af04562509d1d98d2bdeb088f8f0e9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1F 9536 bytes