Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7149c0e4d70aba…

MALICIOUS

PDF

70.2 KB Created: 2020-08-13 23:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ef52fdfe06dc7885a51b03cb952557 SHA-1: 75b956b12091c4089a1cc2bc772fab62eb47b3c7 SHA-256: 4b7149c0e4d70abaa3d824e521e5b75adf8e649354eec90a7337de488ddcc2ca
128 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=minerval+lux+answers', which is likely intended to lead the user to malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting an attempt to manipulate search engine results or distribute content widely. The SE_URGENCY_LURE heuristic further supports the phishing pretext.

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.ru/pify?keyword=minerval+lux+answers
    • http://kekene.clubhouseent.com/uploads/1/3/1/6/131606490/genezatalidevaxofoba.pdf
    • http://files.englishappliedlinguistics.com/uploads/1/3/2/6/132681144/sevomotitu.pdf
    • http://kovomi.oabtrucker.com/uploads/1/3/2/6/132681670/parur-setogexuneki-wivokifafatuf-kasenuluxen.pdf
    • http://files.precisiondiecutting.com/uploads/1/3/1/3/131380341/defaveveviz-pizaxe-sovab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/33785513909.pdf
    • https://cdn.shopify.com/s/files/1/0428/1401/3606/files/lojodoxorif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/46652193773.pdf
    • https://cdn.shopify.com/s/files/1/0437/1005/4554/files/cambridge_latin_course_unit_3_stage_tests.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/39399030215.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/88326767940.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/37729890777.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/gekoxiliwabuxatakugizowo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/wixilikilorike.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/64314731789.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/23592225016.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_off0000b05a.bin
822d66d0736c82683f4b8efb38530de0e0f0e7e9e8134a27c67d03928530350d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB05A 4904 bytes
font_01_sfnt_off0000c12a.bin
2ea5d96d77ae2add33649e1faf6e6bd8b9a3a11ad9b8df7b6e920b4f36685397
pdf-font-stream PDF embedded font (sfnt) at offset 0xC12A 16368 bytes
font_02_sfnt_off0000f42e.bin
c286131fd4aa28075b5e406c559e01e688b1a0c136de28944d919ba4dcdd9e4b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 16208 bytes