Malicious PDF — malware analysis report

Static analysis result for SHA-256 5568bd4f354c7dd4…

MALICIOUS

PDF

51.4 KB Created: 2020-09-10 04:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ebea2523c18adf107a88abb04675834 SHA-1: 165c144b6d751dddbfc1e615be0b708a0bf6a448 SHA-256: 5568bd4f354c7dd49db09c9d1542e14e195b5e44abb038be31843eef35c7a7ed
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, 'https://ttraff.club/wix?keyword=acronal+290+d+technical+data+sheet', which is designed to lure users into clicking. The document body, though heavily obfuscated, contains references to technical data sheets and the malicious URL, reinforcing the social engineering aspect. The presence of numerous links to external PDFs, many hosted on static.usrfiles.com, suggests 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.club/wix?keyword=acronal+290+d+technical+data+sheet
    • http://files.oncofocus.com/uploads/1/3/1/4/131407469/vulale-xozotafafu.pdf
    • https://static.usrfiles.com/ugd/0e2875_38af4541794843bfb238b2a7a17e704f.pdf
    • https://static.usrfiles.com/ugd/b8c837_257ff7cb4bf341fd9cb2c9f079d40954.pdf
    • https://static.usrfiles.com/ugd/01bc73_ac9fc2297dc14673b95a53b6a38bcdd4.pdf
    • https://static.usrfiles.com/ugd/af0aa9_3161e2a486374f19b7ad30d89eb8f56a.pdf
    • https://static.usrfiles.com/ugd/a8cc01_b6183c6c09384ac5958e2871fc0fbe1f.pdf
    • https://static.usrfiles.com/ugd/c33cdb_3d93842daf5c412489f3eeda80404433.pdf
    • https://static.usrfiles.com/ugd/851c7c_34da47de22f646a793b8401aa00dcbe8.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/sabogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/muxudalexed.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_off00007baf.bin
b7338c0ae6863e79543d552d684af603915a804db5185fd0653139c3a51e6427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAF 5448 bytes
font_01_sfnt_off00008e23.bin
c12d6ad672269e29099dc8a84a0b1c41672e4d4aa860eada61489f8a9d357f83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E23 16636 bytes

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