Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f084b523407686e…

MALICIOUS

PDF

49.5 KB Created: 2020-08-03 18:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ae765c3fd5072f8d225303d2ec1df08 SHA-1: 4049f2b56173bfce783bdbc95855f3f02c9fc0a7 SHA-256: 2f084b523407686e3c4d34135eca82ac85b809c5f36aec1e83f361cf075ad92f
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'rental agreement contract pdf' and includes the malicious URL. This suggests a social engineering tactic to trick users into clicking the link, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.ru/pify?keyword=rental+agreement+contract+pdf
    • http://files.lagniappepeddler.com/uploads/1/3/1/3/131383981/dimiwupawibageri.pdf
    • http://files.superhelper.org/uploads/1/3/0/7/130739147/vovasivilifuxu.pdf
    • http://files.wolfandcrown.com/uploads/1/3/1/4/131453177/2925164.pdf
    • http://files.nonprofitleadershipcollaborative.org/uploads/1/3/1/1/131164460/simadilenutiwakipumi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/little_girl_anime.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/kodanetakanurafibuluno.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/komoxubuwuruwox.pdf
    • https://cdn.shopify.com/s/files/1/0440/0853/8262/files/dotupaxasilurekuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/mavejilojewog.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/kamiripopanixesu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/93589042582.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/jiwolaje.pdf
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/59553273694.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/38057550771.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/44233529615.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/labamoxexozapotuwutof.pdf
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/45848113683.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_off000084af.bin
4705f2abe9d88b5899185751a6c45517e60a499b85a5e070b770f227781b2ad9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AF 5304 bytes
font_01_sfnt_off000096b0.bin
fd5b31be79e965fbe9aea996a3ec330694227e1825749d6ba14e384a0a6fab28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B0 10080 bytes

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