Malicious PDF — malware analysis report

Static analysis result for SHA-256 f940972533ba1552…

MALICIOUS

PDF

47.7 KB Created: 2020-08-25 04:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12a7aa020a631e79038687d48e67cc38 SHA-1: 3a4d8b7661df6ff3b474b12673d5092d4b45f34a SHA-256: f940972533ba15521a75c624239370c6b2a56ae75361b2fdc57860f6b3c0be18
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many hosted on Shopify, suggesting an attempt to obscure the final malicious destination. The presence of a 'download button' lure further supports a malicious intent to redirect the user. No scripts were extracted from this sample.

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.com/pify?keyword=ambassadors+choir+video
    • http://files.aerospades.com/uploads/1/3/1/8/131856769/2c59cd1b781a383.pdf
    • http://files.stephaniemarazzo.com/uploads/1/3/0/7/130776142/7174891.pdf
    • http://files.faithconnectionsonmentalillness.org/uploads/1/3/0/9/130968934/saludanosexes.pdf
    • http://digusetut.altoonahealthandrehab.com/uploads/1/3/0/8/130874493/fatoje_tazusedakeraz_jetet_jawut.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/84713817812.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/69199736729.pdf
    • https://cdn.shopify.com/s/files/1/0434/2212/2151/files/ecg_interpretacion.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/contacts_backup_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/pafuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7369/files/mathematical_proofs_chartrand_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/9512/8216/files/36964133312.pdf
    • https://cdn.shopify.com/s/files/1/0430/4276/7001/files/94358163273.pdf
    • https://cdn.shopify.com/s/files/1/0433/6258/2693/files/4553131039.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_off00005b9f.bin
442a3b8b6195cd3dcb66e5e4b95388a2352d8d051926a830f244f53967ffaa98
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9F 5336 bytes
font_01_sfnt_off00006d9c.bin
16751ffc537481b7df59ad13660f954c3a76a011ff37b6bd1fc67248461bd5eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 14864 bytes
font_02_sfnt_off00009b6e.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B6E 16092 bytes