Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd12452fad46e02…

MALICIOUS

PDF

42.0 KB Created: 2020-09-03 05:34:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92b375501ef4b128c8118296bdef13a8 SHA-1: c9c5d3ae81cc02ad5a0722f288c05043186565db SHA-256: 1cd12452fad46e02c52b300d439d12ac07063c762dcaf436c6aa2ddfdb2fba56
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=bhootnath+return+movie++480p'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded links, many pointing to shopify.com and static.usrfiles.com. The document body, though heavily obfuscated, contains a reference to the same malicious redirector URL. The presence of a 'download button' heuristic further supports the 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=bhootnath+return+movie++480p
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/wufukomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/modern_bioelectricity.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/server_icon_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0461/7699/3434/files/50787927445.pdf
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/medical_terminology_a_short_course_8th_edition_access_code.pdf
    • https://static.usrfiles.com/ugd/607883_e1b30f8b62864b75b2316f695c7ab4c5.pdf
    • https://static.usrfiles.com/ugd/3b7182_c6dd0f963470421dbcc1f021ccd947b9.pdf
    • https://static.usrfiles.com/ugd/cc03df_ade86f1294c94fedbf9b67ca2c26d5b2.pdf
    • https://static.usrfiles.com/ugd/cf14a4_a139470ee0ed4385bc79f911cc20257b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a939c1e33d81480ca36b718dde4ebfaf.pdf
    • https://static.usrfiles.com/ugd/2ca09c_32792f5e78774b2da595afe47ebe71c2.pdf
    • https://static.usrfiles.com/ugd/0dd040_6a02477ea148481abc385d66e47cb596.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_cd8cfc738fa44e0cbb1f73ffeae2b88a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9317eb29db70495d88f1b505263542c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_98fc5aa7399b4310be49e70d6ba902a8.pdf
    • https://static.usrfiles.com/ugd/8a419d_9545b057f8cc4061b4d5d43141b3da44.pdf
    • https://static.usrfiles.com/ugd/b8c837_71122891b4c64d9488dcbdef0f8eca2c.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_off000057bf.bin
ed6d73ccbbc293104fb0fb2ae959a8d37a75b2ab9a17439e7e6086c881cec360
pdf-font-stream PDF embedded font (sfnt) at offset 0x57BF 5264 bytes
font_01_sfnt_off00006979.bin
df501ab4cdce9441a36bfd4cc39459b4f0dc5fb055e71373c4c0104be5e6e483
pdf-font-stream PDF embedded font (sfnt) at offset 0x6979 10352 bytes
font_02_sfnt_off00008c91.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 4324 bytes