Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0033f0e0b0fbba…

MALICIOUS

PDF

45.3 KB Created: 2020-08-14 17:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c187ec84c2213328eed221e8df890ac6 SHA-1: c17ea370ce951a731a6acce6b052cda63a7d4cf9 SHA-256: 7e0033f0e0b0fbba24446a437e48964f00e1d066e028fdb0ecc9eaae293d9ebc
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or redirection attack designed to lead users to malicious content. The document body, though heavily obfuscated, contains the text 'Free printable bulletin board borders pdf' and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=free+printable+bulletin+board+borders+pdf
    • http://files.daddybabygirl.net/uploads/1/3/2/7/132740541/1395599.pdf
    • http://files.southerngracedanceco.com/uploads/1/3/0/7/130738875/zosiruforatud.pdf
    • http://files.roomtowritebristol.com/uploads/1/3/1/4/131408899/navalomijajuro-zuporepafod-vexazebugumu-pozogaze.pdf
    • http://xuveta.spearwooduniting.org/uploads/1/3/1/4/131437044/gidunovir_fobeturenolana.pdf
    • http://files.sidthesasquatch.com/uploads/1/3/1/3/131379042/8477442.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/giwelasefipelepo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdf
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/dilixizevipewebal.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/bunowejiza.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/masakodesosamosoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1898/4352/files/cambridge_english_prepare_level_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/fejewivawu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/richard_thaler_behavioural_economics.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/jipukirutezaselaka.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_off000072b2.bin
f1ce4ea14dcaaaceb0ca7237e66879dd837c1fcd53a91abd901f5d25d40f8d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B2 5132 bytes
font_01_sfnt_off00008422.bin
6aa5d5b6dcd19e70ce99247e611c1c3e8d4a32531c8b76afc711a7e10295dc1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8422 10548 bytes

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