Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5eec657bf424b4c…

MALICIOUS

PDF

36.9 KB Created: 2020-08-18 20:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfa788015830678bce7076416c0aad3b SHA-1: f07aff881c897eec40cefed391037990f2db3f5e SHA-256: e5eec657bf424b4c776315e6aad0862c17eed7fd7ff92d6b7c5c2d605b8234cc
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.cc/pify?keyword=forno+ariston+fb51a+manuale'. This technique is often used to obscure the final malicious destination and evade detection. The ML classifier strongly indicated maliciousness, and the presence of numerous external PDF links further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=forno+ariston+fb51a+manuale
    • http://files.powells5014.com/uploads/1/3/1/4/131406960/muxuruwusitagopo.pdf
    • http://files.daniellelbeattymoodyphd.org/uploads/1/3/1/3/131379510/9791494.pdf
    • http://files.breastfeedingmybaby.com/uploads/1/3/2/3/132303147/7233d.pdf
    • http://files.maddysmusicstudio.com/uploads/1/3/2/6/132695574/5015111.pdf
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/47218633986.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/fevovobujunefedi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/samakod.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/97430432560.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/sagelinodipolivodiba.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/93798488666.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/wesezafogokukobaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/string_array_to_int_array.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8553/files/accsap_8_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/6285122306.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/wexomugowozajomowabod.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_off000052d7.bin
5ca0507e2dbffb1b8351faf98ef60458dbed48c59cc0680bab3b28594db23814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D7 5184 bytes
font_01_sfnt_off00006467.bin
f251103c2072e76c35cff84e395d3010ac0a06b69ccf05a8fc1dd33e633b7b7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 10104 bytes

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