Malicious PDF — malware analysis report

Static analysis result for SHA-256 592137bc6c7b95c7…

MALICIOUS

PDF

41.2 KB Created: 2020-08-12 09:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7fc8a9768dbb99cda4e7b1e8357221 SHA-1: e741cc792e14f42cb8307ea925b6283adec9ea5a SHA-256: 592137bc6c7b95c7c71619bfa0e1d332cdf50e754bc13c481a5f52f545b2bd49
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body text and embedded URLs suggest a lure related to 'business communication notes pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=business+communication+complete+notes+pdf, which is likely used to redirect the user to further malicious content. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic.

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.com/pify?keyword=business+communication+complete+notes+pdf
    • http://files.rosekleidon.com/uploads/1/3/2/6/132695543/najunos.pdf
    • http://files.mattypsrailwaypics.com/uploads/1/3/1/4/131409909/911511.pdf
    • http://sexiwo.newyorkvideoproductions.com/uploads/1/3/1/1/131164239/c363c660.pdf
    • http://files.sapientboutique.com/uploads/1/3/1/8/131871745/pidera.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/xefatuzinifad.pdf
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/miller_zoology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/vimazoriruvulisugen.pdf
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/bonemewe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/37475010705.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/psychological_assessment_report.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/nupapusefaxikemoxov.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/punajugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1812/4445/files/73057753485.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_off00006246.bin
9fd3f793aedc052eabf902c2458675d2327ee19f0fa8b526bfae0d7d2946ae60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 5256 bytes
font_01_sfnt_off0000740b.bin
a19782ac4b0e57b6cf53478aeed7d5affc37a5748fb7579d5bdb638a21939c4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 10452 bytes

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