Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1b247dcea77831…

MALICIOUS

PDF

41.7 KB Created: 2020-08-09 05:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43f862a14a3f32c1f586834925506bec SHA-1: 478daad10a127b01b33b4853f33c4b6a187954e3 SHA-256: da1b247dcea77831d8c1010dbb4070b07b87cea53ca6f16cf621770ea268015f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=gas+scrubber+design+pdf'. It also exhibits a PDF link farm behavior, with numerous embedded URLs. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to download further malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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=gas+scrubber+design+pdf
    • http://jitoxubi.servicesveterinairesambulatoireequin.com/uploads/1/3/1/4/131407995/rimibi.pdf
    • http://files.theaceso.com/uploads/1/3/0/8/130814017/275221.pdf
    • http://wiveruki.deanvukelicstonemason.com/uploads/1/3/1/3/131383544/lixepiluxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0441/1850/7672/files/java_games_codes.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/niluxemasavoxuge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdf
    • https://cdn.shopify.com/s/files/1/0435/4650/9461/files/blazblue_clone_phantasma.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/adverbs_of_frequency_exercises_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/administrative_law_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/9994/7169/files/11665881956.pdf
    • https://cdn.shopify.com/s/files/1/0437/5638/8506/files/benyamin_aadujeevitham_novel_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/nofofago.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.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_off000064c4.bin
e79e29a74b492d1d1590853a2d15c4e838f1b83bea9232316aa9d6092a0f9ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 5460 bytes
font_01_sfnt_off00007764.bin
1a89678bfac7e69ea2ee94ee1cc99a3eaadd9c93dbda8968606b3cf84bf2dbbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7764 10240 bytes

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