Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4940fd75f6e988a…

MALICIOUS

PDF

34.2 KB Created: 2020-08-13 23:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 515581588d59385db4c1a882fca9df50 SHA-1: c6ec91d820b8820c148a90304aadc5c9ae910bc2 SHA-256: d4940fd75f6e988adc311c7124791cbec1edc8af22312af567963d0decf34f80
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=find+someone+who+worksheet+pdf'. This URL is presented within the document body, suggesting a social engineering lure. The file also contains a large number of embedded links, many of which point to Shopify domains, indicating a link farm strategy. The primary malicious IOC is the redirector URL.

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=find+someone+who+worksheet+pdf
    • http://files.bensawyermusic.co.uk/uploads/1/3/2/7/132740218/kelupotamevivok.pdf
    • http://pukune.quillenphysiciansehr.com/uploads/1/3/1/0/131070476/cce728c7522.pdf
    • http://vefod.qigongforwomen.com/uploads/1/3/2/8/132814930/jaliwomumuwov_kaforani.pdf
    • http://files.wrmgllc.com/uploads/1/3/2/6/132683357/faxizekasagim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/9855433283.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2655/files/dalenelivulenefozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/pajizemeli.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/kopemetomoxut.pdf
    • https://cdn.shopify.com/s/files/1/0430/3542/6970/files/93791739960.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/13015771445.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/47355434801.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/cengel_fluid_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/67133726507.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/dewevuzugadilelar.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/biacore_sensor_surface_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/rarikoxifilale.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/11763064585.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_off000049ef.bin
7e4e9d0e2d7454fce17459aa87f7f711f46c54ede88d610a73133bfa4dc13560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49EF 5148 bytes
font_01_sfnt_off00005b5f.bin
17c31ace07482a047b9ce2c92bf5e1e6e93935b4b9fdfcd6edb919b50d07b267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5F 9460 bytes

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