Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52c30b83a11c38d…

MALICIOUS

PDF

59.8 KB Created: 2020-08-16 12:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 561ee5c91fc2509b7503300497fe5980 SHA-1: 0fa5bfd35aca7dc3ba033f0b42b8318ac1b3c83e SHA-256: c52c30b83a11c38d6edb9fbd8ea6889baa8c3248d269c479bfcfa3a5221ba44e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=api+performance+monitoring+tools, which is also flagged as malicious. The PDF_SEO_LINK_FARM heuristic indicates the document contains a large number of external links, likely to obscure the malicious redirector.

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=api+performance+monitoring+tools
    • http://files.missionscup.com/uploads/1/3/1/8/131857626/5284767.pdf
    • http://files.monheganschool.org/uploads/1/3/1/6/131637774/3b740763f.pdf
    • http://files.904pipes.com/uploads/1/3/1/3/131398214/rusaromubel-taselijafutij-xatuzibujujagov.pdf
    • https://cdn.shopify.com/s/files/1/0448/3910/8770/files/lspdfr_best_callout_mods.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/49580206065.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/69287070246.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zefen.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/70808270881.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/rudaledajibasejusiza.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/jigiju.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008caa.bin
19e6b8cc2c987d1ded990a483102ac3291cf575b964a03b20e71d2e0859e1004		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAA 5324 bytes
font_01_sfnt_off00009ea3.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA3 1800 bytes
font_02_sfnt_off0000a731.bin
769362f9d1348ca828fd2c7ad000d5b72604aafbfc8248277d5520168b0712bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA731 10772 bytes
font_03_sfnt_off0000cc23.bin
7603e3e57e6b1a92f5b3ca7a4d7066c4311a705263172e05f9cf7f27925f2f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC23 16284 bytes

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