Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d32347bf7c8de88…

MALICIOUS

PDF

68.6 KB Created: 2020-07-28 19:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7421ad07ba435aff6abbfa366d684194 SHA-1: e660d4ff61dd15a2bb2227503fd9cae24bfc829f SHA-256: 1d32347bf7c8de88bdbb93136d4ab9414f7a02f1acc92b374e7d15237171b8bc
140 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=have+got+questions+and+short+answers+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'questions and short answers PDF'. The presence of numerous external PDF links, including one hosted on Shopify, indicates a link farm strategy. The heuristic 'SE_CALLBACK_LURE' further supports a phishing or scam context, likely aiming to direct users to malicious infrastructure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=have+got+questions+and+short+answers+pdf
    • http://files.designerstickers.net/uploads/1/3/1/4/131453024/4b3369851b704b.pdf
    • http://files.northwoodsyogaandwellness.com/uploads/1/3/0/7/130740138/905cde375635e55.pdf
    • http://files.bensvintagevillage.com/uploads/1/3/0/9/130968994/memazeminage.pdf
    • http://files.saoceanpaddlers.com.au/uploads/1/3/2/6/132681479/moboxuke.pdf
    • http://files.aldaqah.com/uploads/1/3/1/6/131636789/garoga-minupopovu-lilurejemi-lezoz.pdf
    • http://files.designerstickers.net/uploads/1/3/1
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/julubado.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/zozojuzen.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/pazoluzikuxemux.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/xovikipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/64147817974.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/pavuvax.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/25715512372.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/jakipitawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/pajusitoxidalalozuniz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/wezeveluvatosekatunubedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/79495709429.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_off0000be08.bin
6d20d5f983e1e44560d28e4b2bf143025a1b3b7c2f81fa3dcca82c82064f8354
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE08 5392 bytes
font_01_sfnt_off0000d05e.bin
04cc75a71cd5a5c124354e31500aa5506c51163ad49d44f7650d3fb9126d5af8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD05E 16344 bytes