Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e46c720de118b93…

MALICIOUS

PDF

44.4 KB Created: 2020-08-01 13:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 991bc532386aaee1cd249e0e061a3e0f SHA-1: d88ce650fa1d0bc2edbe90e9eb294e2c88794939 SHA-256: 7e46c720de118b9343645cbb5c331f7f313df2c0dd1c855e0abc2fb5ae130e80
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous URLs, including a suspicious redirector at 'https://ttraff.cc/pify?keyword=dwarven+female+names', which likely serves as a lure to a malicious destination. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning.

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=dwarven+female+names
    • http://files.paintrollersplus.net/uploads/1/3/1/4/131406892/7564200.pdf
    • http://files.k9clubhouseymm.ca/uploads/1/3/2/6/132681513/7077842.pdf
    • http://files.hagerstownhomestore.org/uploads/1/3/1/4/131406412/9538850.pdf
    • http://files.shedofbooks.com/uploads/1/3/2/6/132681954/1827617.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/nusarepemugosuzitema.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/86429922369.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/unholy_dk_bis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/33022102457.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/wesuwimoxe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/taxobewat.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/77234789180.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/xovimez.pdf
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/68408670564.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/31377022733.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_off0000699e.bin
32d7ef07e025141ffc746142f8f5f4d7208f25d09e600940670e32d7eecef773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699E 5064 bytes
font_01_sfnt_off00007ae6.bin
abf1009e863a009047384467c9a5b81ffc50a04fa1064ea855a72ddff40bc77c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 13128 bytes

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