Malicious PDF — malware analysis report

Static analysis result for SHA-256 355db8f53cd5b0f1…

MALICIOUS

PDF

36.8 KB Created: 2020-09-08 23:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 840e8aef52271abd16bc9d2c513a8f04 SHA-1: 458107949b3d09a4c756fba583f295713719b248 SHA-256: 355db8f53cd5b0f1bcaaa158a67a2efbdaa7560cb6980a860a325899702667ac
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=i+love+you+lord+hymn+sheet+music'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com, likely for SEO manipulation or to obscure the primary malicious destination. No scripts were extracted from this sample.

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.link/wix?keyword=i+love+you+lord+hymn+sheet+music
    • https://cdn.shopify.com/s/files/1/0432/5205/6227/files/africa_crossword_puzzle_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/1444/7519/files/vazobudafumuridasar.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/25259389208.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/dowazodisudotizifudol.pdf
    • https://cdn.shopify.com/s/files/1/0459/2648/2071/files/new_bengali_full_movie_mkv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/vemixuwikezotuzonidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/81649802520.pdf
    • https://cdn.shopify.com/s/files/1/0434/5669/2390/files/political_ideology_quiz_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0443/2723/9836/files/ordinal_numbers_worksheet_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/86312779631.pdf
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/25422191515.pdf
    • https://static.usrfiles.com/ugd/1ebe14_07455f1ab8124313a1d5880d79a1ac1e.pdf
    • https://static.usrfiles.com/ugd/f5a024_0e6cdc23c69b43b3a5fcc61c89b9189d.pdf
    • https://static.usrfiles.com/ugd/e73fea_744a38a064b34fe188526f439b1bbfc6.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_off0000460d.bin
9448df3be42ba6705235b743d99f3ae60c4d42297a7e9b10fcc23feac061af57
pdf-font-stream PDF embedded font (sfnt) at offset 0x460D 4952 bytes
font_01_sfnt_off000056bd.bin
90e9a9e238ac40c1b71eab3c169e903752893a054716d5bc3245f3cce4b7248f
pdf-font-stream PDF embedded font (sfnt) at offset 0x56BD 9848 bytes
font_02_sfnt_off00007866.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x7866 4324 bytes