Malicious PDF — malware analysis report

Static analysis result for SHA-256 e067815ec8568b5c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-21 20:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb83e5f9b7398de24726d356e1c5bea SHA-1: 83a59228fd52ff3ded533fccb05349f805fc3fb4 SHA-256: e067815ec8568b5c63b864eb6a62feca06b58616f90fd38cd93a385024fe0926
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.com/pify?keyword=sql+developer+alter+session+set+nls_date_format. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains the same malicious URL and a reference to SQL developer, likely a lure.

Heuristics 3

  • 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.
  • 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=sql+developer+alter+session+set+nls_date_format
    • http://files.gumke.com/uploads/1/3/1/4/131437689/voxafes.pdf
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdf
    • http://files.la-arts-district.com/uploads/1/3/0/9/130969471/936724.pdf
    • http://biwuroko.riefcanada.com/uploads/1/3/0/7/130739561/dilusorob.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/bulletin_de_salaire_vierge_assistant_maternelle.pdf
    • https://cdn.shopify.com/s/files/1/0431/7868/8674/files/54905693377.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/buwureguzame.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/38353439600.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/vopemonofupixut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44368867506.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/sixth_grade_reading_comprehension.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2530/files/ceremony_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/tavanumeneji.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_off00005f1a.bin
89ef70fb55ed2be1c24e581df0731780123c38eac5c5398bcfb371b5ed39ac68
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1A 5504 bytes
font_01_sfnt_off000071d0.bin
1a8a0043408f78c379cdfb235a495cf0c26002b3037e24af12cc89a0c730ebc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 13264 bytes