Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f78ae540e28052…

MALICIOUS

PDF

65.2 KB Created: 2020-08-29 22:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76a9e1e4015178c563b7882201952ee1 SHA-1: d1d4d9ecc16f476198b9766984637d59b93ce6d5 SHA-256: 25f78ae540e2805219ee0283896fe83a320fc09800d5616afa72f74f2800d010
120 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.me, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a link farm heuristic further indicates a malicious intent to distribute 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.me/wix?keyword=katy+perry+bon+appetit+video
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/66946226251.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/ms_excel_invoice_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/3751/5176/files/41368729242.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/whispering_tinkers_construct.pdf
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/35504928047.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/diviw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/nojidibejubisumox.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/delancey_and_essex_municipal_parking_garage.pdf
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/holt_algebra_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/60514273671.pdf
    • https://static.usrfiles.com/ugd/6cfc61_352f799202e646b39379697dc0ef6525.pdf
    • https://static.usrfiles.com/ugd/b8c837_464e5ac5559d42a2a350eb3a5e43b3a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e3e827f545842c9ad5eab9ce9d56d32.pdf
    • https://static.usrfiles.com/ugd/0049ca_4a17c995b9ac4cad8c21f9d4793285ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bec7f00dfa645c18488ffa75b96729d.pdf
    • https://static.usrfiles.com/ugd/77941b_3c87cee5925541ce8f5523f528cb502d.pdf
    • https://static.usrfiles.com/ugd/b8c837_79d18a12e5bf4706bb62bc5982b6810e.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_off00009f73.bin
e7e56ea25186136d885efe17af7a774391d1a60eb43eb835690e5b5167db41ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F73 5012 bytes
font_01_sfnt_off0000b096.bin
d35bbc3f9e54dd9790d2cd75399ed01f5c24372b72b248e09eb4912e7a269332
pdf-font-stream PDF embedded font (sfnt) at offset 0xB096 15960 bytes
font_02_sfnt_off0000e1cc.bin
15a68420f1c377824b8c1fd571ac7c30556db1b4bc05006bf44ec3f6c6c83208
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CC 16120 bytes