Malicious PDF — malware analysis report

Static analysis result for SHA-256 447fef1090d456a5…

MALICIOUS

PDF

51.5 KB Created: 2020-08-22 22:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4755708c9e129c939955937d50074312 SHA-1: 2eaec06954cef20c92bcd472a2db9f6c102adf72 SHA-256: 447fef1090d456a512513a9436bbd62debbf7e9c46a91b14c6d34f17774a8e63
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Kilroy realty corporation sustainability report' and the malicious URL. This suggests a phishing attempt to lure users to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to obscure the final malicious destination.

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=kilroy+realty+corporation+sustainability+report
    • http://files.creativeshuli.com/uploads/1/3/2/6/132695321/limijipufurak.pdf
    • http://dubilitek.inspiredhouseplans.shop/uploads/1/3/1/3/131378814/tojekubeb_wikejasemexa_firusi.pdf
    • http://files.southaiken.org/uploads/1/3/1/3/131383383/39860.pdf
    • http://files.boutiqueroomphuket.com/uploads/1/3/1/8/131856827/kitidijifuzif-tidalevejox-jabodovavezir.pdf
    • https://cdn.shopify.com/s/files/1/0449/6012/0991/files/grammarly_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0464/3337/0264/files/sepifesakatuxuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/buwibofurobiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/mawon.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/bevepinarozoputusimafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/xuzabalemor.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/america_got_talent_dance_videos.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/35929677365.pdf
    • https://cdn.shopify.com/s/files/1/0432/3688/4642/files/rugurifopaturekigonesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9880/files/application_for_employment_form_nz.pdf
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/98152780853.pdf
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/zipojupil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d02.bin
b52805b95dfb6ebeb4a89796e83b5c4c0b2f1d1137cd70d8f602171ba91f957f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 5020 bytes
font_01_sfnt_off00008e20.bin
60cf43db4f9875e74b0391c5695b3bc2d27102b8af8ca5b9e3bde3b147c25990
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 11056 bytes
font_02_sfnt_off0000b2b4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B4 4324 bytes