Malicious PDF — malware analysis report

Static analysis result for SHA-256 580d334d99f56efa…

MALICIOUS

PDF

142.9 KB Created: 2020-09-14 15:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c308b03ec2c391e82b063731373b4f61 SHA-1: eccb57f7ee799f113f61da4f1bb4c356c9c01a6d SHA-256: 580d334d99f56efa90db33e30d71c9b6c2441044dc25ba6cd184ae8ae4194cb1
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a search result for accounting solutions. The document also contains a mass external PDF link farm, suggesting a SEO poisoning or link farm attack. The presence of invoice-related language further supports a lure-based attack pattern.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=intermediate+accounting+16th+edition+solutions+pdf+chapter+10
    • https://static.usrfiles.com/ugd/8a4248_33311bd5897541c780b36498bd5a72fe.pdf
    • https://static.usrfiles.com/ugd/18f527_92671325f1a3410db3c2ac9c6801cd37.pdf
    • https://static.usrfiles.com/ugd/fd3290_594c9f5327d4448da5b9314211308e34.pdf
    • https://static.usrfiles.com/ugd/e2b09b_45f0c372e9fc497c928585a66420b337.pdf
    • https://static.usrfiles.com/ugd/6cabbb_c3378e1cc24f48dd84f692ac46ca4cf0.pdf
    • https://static.usrfiles.com/ugd/21e6f2_e72a17e6f3e4420cb722927f65422062.pdf
    • https://static.usrfiles.com/ugd/3bca44_bb75f1570a5a4088a2c7298f878a1f86.pdf
    • https://static.usrfiles.com/ugd/cc089a_a7e7bfc620d74b20863bd68451ed1ed6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6477cf545f694567a7980cc4a6bc81e6.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/77274604437.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/jotaxijadesino.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/wiporujovekebutebilaji.pdf
    • https://cdn.shopify.com/s/files/1/0440/5241/4614/files/zakonere.pdf
    • https://cdn.shopify.com/s/files/1/0469/3321/3339/files/ios_13_beta_2_developer_profile.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_off0001e839.bin
1cba0b3e68eb635826121185b8171cc6193adeed4f770661f74270e504bc07c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E839 5856 bytes
font_01_sfnt_off0001fbfe.bin
64d2f46a3885ccd599a57e731687adf0bcf5e6743b6e377319d38518eee4c230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FBFE 16120 bytes

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