Malicious PDF — malware analysis report

Static analysis result for SHA-256 f159298059169011…

MALICIOUS

PDF

50.1 KB Created: 2020-07-16 02:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a6239ba2531524ba2f70e64b8396fd SHA-1: c0c664aec8c31c44aa2dde264c7e357b6ba3f6b7 SHA-256: f15929805916901116df112b3b3cdff7eef5fa194e4c8260de345a3dab4a90bf
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically `https://ttraff.cc/wb?keyword=tesseract%20ocr%20pdf%20to%20text%20python`. The document body, though heavily obfuscated, contains text related to 'Tesseract OCR PDF to text Python', suggesting a lure to attract users searching for this topic.

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.cc/wb?keyword=tesseract%20ocr%20pdf%20to%20text%20python
    • http://files.modernandminimalist.com/uploads/1/3/0/8/130873997/nemezafazunek.pdf
    • http://files.theresearchmonster.com/uploads/1/3/0/7/130738988/jusibagun_jewevuxodirome.pdf
    • http://files.margaretstewart.com/uploads/1/3/0/7/130740561/3452434.pdf
    • http://files.geoffreybshort.com/uploads/1/3/1/1/131163914/wumabemozor_suzom.pdf
    • http://files.eastfallsfarmersmarket.com/uploads/1/3/0/7/130775558/8476810.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4177/files/nipurabojawavujogowamax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9009713252.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/81645231680.pdf
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/taseletarosixubafepof.pdf
    • https://cdn.shopify.com/s/files/1/0431/9032/1313/files/mubanubazupemo.pdf
    • https://wozimupo.files.wordpress.com/2020/07/11791157562.pdf
    • https://jugowaxefij.files.wordpress.com/2020/06/80811020007.pdf
    • https://xumelureda.files.wordpress.com/2020/06/bamizolipolabosasas.pdf
    • https://wavogufelo.files.wordpress.com/2020/07/30642462332.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zorugeligix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20931566490.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/87821641580.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/70690381225.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_off0000856f.bin
30b3513bdb5da3890f3c202d3bf1038a8145b49eadd470d8e50b0e5f4161eb81
pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 5068 bytes
font_01_sfnt_off000096a8.bin
a45870ac9039f881f482d8f593596290deca276e6a4e961b7cf78b6ef7dcdb26
pdf-font-stream PDF embedded font (sfnt) at offset 0x96A8 10748 bytes