Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7120e41df221db…

MALICIOUS

PDF

49.8 KB Created: 2020-08-25 06:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fd7f7b3808987b6ca186e0ab82a0d65 SHA-1: d6b0634da100ae7ff38c5f76cfbdd872878e90d3 SHA-256: 8c7120e41df221db3d1474e98f7ecbf199377b38a4a5db60a0c7b7b639dcf02e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=drunken+whaler+sheet+music'. Additionally, it exhibits a PDF SEO link farm behavior, embedding numerous external PDF links. The document body, though partially corrupted, contains the same malicious URL and references sheet music, suggesting a lure to trick users into clicking the link. The file's purpose appears to be redirecting users to potentially malicious or spam-related content through a chain of links.

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=drunken+whaler+sheet+music
    • http://gedadoxos.vfwpost8195.org/uploads/1/3/0/7/130738591/mutijuzugatuvakaj.pdf
    • https://cdn.shopify.com/s/files/1/0461/3698/3720/files/bihar_daroga_previous_year_question.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/84009253368.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/mobufuguzisutan.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/28418050231.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/cv_marketing_digital.pdf
    • https://cdn.shopify.com/s/files/1/0434/7428/8793/files/craxy_frog_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/vishnu_sahasranamam_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0463/1166/9917/files/extent_report_3._1._5_jar.pdf
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/vabirunob.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_off0000820b.bin
fdc2a9c8e76ef7cf144fdf889355d61a8e03f79ac72abcda4c9b5aca69651698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 5192 bytes
font_01_sfnt_off00009396.bin
ad3b7cf91c24fc6dfc2a08f88228db59bd507845de28b500b02ad2937d33b247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9396 12180 bytes

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