Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63acbaed42e457f…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 18:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe1dddea758cb100c3661f9892af9d14 SHA-1: 830080972a4a29a0421d03ef309f037d2d441f38 SHA-256: b63acbaed42e457fb09285c8f8f35fd99ad6dce046495f483dbf163323f02b41
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO spam or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=periodic+table+of+elements+pdf+printable'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to download further content. The presence of multiple PDF links points towards a link farm or a distribution method for malicious content.

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.ru/pify?keyword=periodic+table+of+elements+pdf+printable
    • http://files.juliemaxwell.com/uploads/1/3/2/6/132696104/poliposabepajegix.pdf
    • http://files.mrsambermoore.com/uploads/1/3/1/3/131380005/fezanuwasi.pdf
    • http://files.muzikale.nl/uploads/1/3/0/7/130776646/1f0b28.pdf
    • http://jopemigi.jordansidfield.com/uploads/1/3/0/8/130874038/jurit.pdf
    • http://files.multiscalar.de/uploads/1/3/2/6/132682790/jazinira.pdf
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/ropejalogokepivoxuvisex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3367/files/pagikenubidolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/endospore_formation_in_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0429/4633/0791/files/jokulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/828580197.pdf
    • https://cdn.shopify.com/s/files/1/0447/1917/7882/files/adenitis_cervical_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/fefivedupumurelapazuriga.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/33766052113.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/veterinary_dental_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/76311418214.pdf
    • https://cdn.shopify.com/s/files/1/0429/4885/3926/files/levugomuwaritub.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/mattafix_big_city_life.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/dutobix.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_off0000678a.bin
4d0e27bb540aa9f953a324334b714a6ec9ba11c1eaf7c492ca50fb888757be5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x678A 5444 bytes
font_01_sfnt_off000079ef.bin
5471a9b02e2193fdc3e9955e0f670a095b3638e2185c02247ef391cb98353775
pdf-font-stream PDF embedded font (sfnt) at offset 0x79EF 10024 bytes