Malicious PDF — malware analysis report

Static analysis result for SHA-256 281900d950778ea7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 20:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c279900988d531d01657b546c37eeeb SHA-1: f454d757adb32379705255dc98bd8f9f41f35781 SHA-256: 281900d950778ea79c50b2f349e1060336da3aa6c6677216cc80a8aed397b6f8
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/wix?keyword=onkyo+ht+r570+no+sound'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to benign content but serve to obscure the malicious destination. The document body is heavily obfuscated and contains the malicious URL, suggesting an attempt to disguise the malicious intent.

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/wix?keyword=onkyo+ht+r570+no+sound
    • https://static.usrfiles.com/ugd/b80405_882901fd7aeb440bbb41fdd4b5790597.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a7c8bbcd9bd4834aa70780b5158fb8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d02b278c217a4eadb270f129d22f049e.pdf
    • https://static.usrfiles.com/ugd/0c4177_05316bd0ee5c49b0858eb7014f559d85.pdf
    • https://static.usrfiles.com/ugd/b8c837_729d092be7254e4cacead38842b70740.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/mufumosodo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/tivibi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/85227946320.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/comment_reussir_sa_vie_de_couple.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7624/files/godoxivamasilolu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/83047308399.pdf
    • https://cdn.shopify.com/s/files/1/0467/7763/0873/files/samsung_galaxy_note_5_price.pdf
    • https://static.usrfiles.com/ugd/b8c837_67939c9c2acd465c9f9410e3c6801e63.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_ee1a0eb70e374fd9b5c420182b36bb22.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fcf.bin
ff92de95f0a0b61dc46cefa18eb8ab1967a154260df4043bfe1312b942cfef13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF 4928 bytes
font_01_sfnt_off0000708a.bin
742e74b928b2ca33e27c29abcccc08878a62dc8c5b72ad2ebd654aa5a2539c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 10692 bytes
font_02_sfnt_off00009513.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9513 4324 bytes

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