Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1993dd803f3066e…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 22:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8e7495faff057d901115f793e67b3a4 SHA-1: fce64674cd6ff2d2186515bb53c4f5b8058a69cc SHA-256: e1993dd803f3066ef1b99ac311becf07375d77fb62823aed448939c4f1e7a67c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=android+10+s9+australia'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to distribute or obscure malicious content. The presence of a 'download button' heuristic further supports a lure-based attack pattern. No scripts were extracted, but the embedded URLs and redirector link are strong indicators of malicious intent.

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.ru/pify?keyword=android+10+s9+australia
    • http://files.jumpline-group.com/uploads/1/3/1/3/131381259/3308322.pdf
    • http://files.telecollaboration.eu/uploads/1/3/1/1/131163761/2026987.pdf
    • http://kuzipofu.hooperrealty.net/uploads/1/3/0/7/130740145/49d4ee507e4.pdf
    • http://vuvabi.worldtraveladventurer.com/uploads/1/3/2/6/132683286/goliwurezuvokuxivana.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/74116707739.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5805/files/mathematical_analysis_by_tom_apostol_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0528/files/huffman_coding_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/pexadominodudiwememal.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/plus_minus_symbol_word.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/95942488129.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/41548435897.pdf
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/62387897471.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/95193328397.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed4.bin
511ece64fd181c470d6777d382653ce7f5fc47dd195630a22532568bfce1a5af
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 5160 bytes
font_01_sfnt_off00007060.bin
45fd46052d229aae2d46ae4e12c0eaea8e04d36bc48d85f5b44c5503f57f026f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7060 13228 bytes