Malicious PDF — malware analysis report

Static analysis result for SHA-256 53382b74d60890b7…

MALICIOUS

PDF

44.8 KB Created: 2020-08-14 18:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b0678af89d7c8bb269d12847080bca4 SHA-1: 98fd4b9b699aec7bfa32857146ee926766646694 SHA-256: 53382b74d60890b78842fe3fc2ebbcd84fe481647732ec5e2cdf580adc3a673e
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated' or 'action required within 24 hours'. The presence of a link farm further indicates a malicious intent to drive traffic to potentially harmful sites. No scripts were extracted, limiting the analysis of direct payload execution.

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=evicore+cigna+clinical+guidelines
    • http://files.filmityourself.co.uk/uploads/1/3/0/8/130873921/lepemavad.pdf
    • http://files.berkshire-epc.co.uk/uploads/1/3/2/6/132681783/mososadonegukovalu.pdf
    • http://sujibukus.thewindingsheetoutfit.org/uploads/1/3/1/0/131070581/4076751.pdf
    • http://nutuf.healthytritowncoalition.org/uploads/1/3/1/0/131070998/3326298.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/nepuwumubafi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/how_to_answer_the_phone_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/domor.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/philips_universal_remote_srp5107.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/cfop_oll_algorithms.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/givaxopejimifukus.pdf
    • https://cdn.shopify.com/s/files/1/0436/7115/8949/files/xizumifadeberegowazizi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/cursive_handwriting_fonts.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/bexapamavezivamupavemide.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_off0000646c.bin
94c553860e68220218bf5c3234d2b0acfd7ed7c3ea778350337f6e3bf4688281
pdf-font-stream PDF embedded font (sfnt) at offset 0x646C 4928 bytes
font_01_sfnt_off0000752b.bin
4d7fe7c4d8e879822217708e504fc26ce75c95fa38887f6f3053eb9080d6dc12
pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 10140 bytes
font_02_sfnt_off000097e8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x97E8 4324 bytes