Malicious PDF — malware analysis report

Static analysis result for SHA-256 223e38da4e84be49…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 13:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e4a0e206a48f3575228b960de8d3b6 SHA-1: 3dfd185bdfed1fd3090479c9a6a49a4705efd778 SHA-256: 223e38da4e84be49f1de4261e5c3bf420df5c14cef755fbcb5c4501cdecfd74d
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on shopify.com, but also including potentially malicious links from 'nightnail.com' and 'vimalgopal.com'. The document body, though partially corrupted, contains text related to a 'beachcomber hot tub manual' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of multiple embedded URLs and the redirector link strongly indicate a malicious intent to redirect the user to a harmful destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=beachcomber+hot+tub+model+530+manual
    • http://files.nightnail.com/uploads/1/3/1/4/131410311/4f1f0.pdf
    • http://files.vimalgopal.com/uploads/1/3/1/4/131406518/1377982.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/a4_size_in_pixels.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/arkham_horror_lcg_rules.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/nys_form_nf-_2.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/john_elkington_cannibals_with_forks.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/convert_to_jpg_online2pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/pokebamamerugiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/7391486032.pdf
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/bs_iso_iec_27001.pdf
    • https://cdn.shopify.com/s/files/1/0437/7732/7265/files/castlevania_symphony_of_the_night_cheats.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_off0000651d.bin
2516472aa68c3bef354df74cb965264454b95110bb0ca5583cffcf9a61773af5
pdf-font-stream PDF embedded font (sfnt) at offset 0x651D 5620 bytes
font_01_sfnt_off00007809.bin
51b2cd0a5f6670b1115ccdbcfadfa1032694e15e966247c27aea8f88fde6d63c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7809 10120 bytes