Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d02d88c18e0521…

MALICIOUS

PDF

42.2 KB Created: 2020-08-03 14:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 219bcdbb240517ee7ed4360da1962e5c SHA-1: 6ab73bf2f0e38ea01fb6776aa914f00151fb02a3 SHA-256: f7d02d88c18e05215a351f074997ef371224fffb762587e8349a55040fa4d8d1
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.cc/pify?keyword=cbse+class+11+accountancy+ncert+pdf, which likely leads to further malicious content. The document body, though heavily obfuscated, contains references to educational material, suggesting a lure to entice users to click the malicious link. The presence of numerous links to Shopify-hosted PDFs, while many are benign, contributes to a link farm used to obscure the malicious redirector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=cbse+class+11+accountancy+ncert+pdf
    • http://files.fritzassociates.com/uploads/1/3/1/6/131636941/rodabo.pdf
    • http://files.guayamarestaurantsupplies.org/uploads/1/3/2/6/132695554/darumavamodede.pdf
    • http://files.cbdfarmacyonline.com/uploads/1/3/1/8/131858287/7953328.pdf
    • http://files.lakesuperiormqg.com/uploads/1/3/1/6/131606331/votatezavomos.pdf
    • http://files.jessicaleighwellbeing.com/uploads/1/3/0/9/130969446/joniwaturagivifopasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/97221329873.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/95861938270.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/68128044199.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/18523028324.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/xawufido.pdf
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/vizirebelujuzaken.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/likibipebakaxirixukevizoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/65441755621.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/54522220540.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/10984660604.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/dopurologilanufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/2443/9704/files/98168776373.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/nojunilokadevevoxer.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_off00006745.bin
31cf06ef9a7afd9ce5696701621e1f255223745c507f2a8c6a039cb3376bb04a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6745 5348 bytes
font_01_sfnt_off00007988.bin
5609b47e975d2bbb8e8fa90fca4cf39c3932c14d51a654f4ecd237cfee72fab9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7988 10020 bytes