Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0410a38ca73eaa…

MALICIOUS

PDF

37.8 KB Created: 2020-09-11 11:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b37f441b8aad135ee8c9d3e30265aa4 SHA-1: 9eabbec92da89a1375c62d0b51f7534d8b75fccb SHA-256: db0410a38ca73eaa15d3a558d81c5b089571c43c4c53de0016b2f241ce83e155
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, https://ttraff.me/wix?keyword=bhojpuri+2019+all+movie+songs, indicating a phishing or scam attempt. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the attack pattern of luring users to malicious sites.

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.me/wix?keyword=bhojpuri+2019+all+movie+songs
    • http://files.worldsandgames.org/uploads/1/3/0/7/130775704/3938397.pdf
    • http://files.laopapayasj.com/uploads/1/3/2/6/132681237/685e7756e39.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdf
    • https://cdn.shopify.com/s/files/1/0438/7838/3771/files/structural_steel_detailing_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/anime_beelzebub_sub_indo_720p_batch.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/adobe_creative_cloud_cleaner_tool.pdf
    • https://static.usrfiles.com/ugd/fe83c3_6bfea1072e01499baca4e83a1c751351.pdf
    • https://static.usrfiles.com/ugd/2ac701_f56af2d0355f43a185cd58faef576a9d.pdf
    • https://static.usrfiles.com/ugd/e2c223_9ddc232c90ae43509d2588d01936d4b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4105a9085274f2aa15636327422548c.pdf
    • https://static.usrfiles.com/ugd/253000_2bcc545776144ae1aa910ec3cfb77ba1.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/vitovoxusomekarenivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/2401877302.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/7400240165.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_off000054a0.bin
d0c028782bde6dc83ad0687a99060264d9e26ba6bcb104efe3f9839f7736df86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A0 5900 bytes
font_01_sfnt_off0000689d.bin
d269dba65403c595a53f1a808f887ae163774b4ee8c9fddd22c8be7efe0b3cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 9868 bytes

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