Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d029321f720db2…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 02:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e6c27c6acdcc20a7fcceb2db1280af4 SHA-1: 42e754c680852c17f4d80ad5ac171230b6541130 SHA-256: a3d029321f720db2bfa9b331f0ad274e4424766971d0fe31b6aacf6457fecd88
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. The document body, though heavily obfuscated, contains the target URL and keywords suggesting a lure. No scripts were extracted, but the presence of a malicious redirector and a link farm strongly suggests a phishing or SEO poisoning attack.

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=john+deere+317
    • http://files.yourcoverage.com/uploads/1/3/2/7/132710624/038a59dda76e5.pdf
    • http://files.preciouscollective.com/uploads/1/3/1/0/131070483/1594021.pdf
    • http://files.easternsloperanch.com/uploads/1/3/2/6/132681404/3588728.pdf
    • http://files.glocesterlibraries.org/uploads/1/3/1/3/131378776/3098917.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/67830048110.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/67263120061.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/vuvawewomuwofivaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/zadobibugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/nowafen.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/93438155508.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7600/files/bevawowutatirufegaxunor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/lejuzubizixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/sisunowupifam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/attention_getter_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/1539/7788/files/natisorobogexitemirol.pdf
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/semantic_ui_cdn.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/6626432280.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_off0000683e.bin
7d8d53266343919fb666725085e07866d36fac42a83fc203336c209218a35a04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683E 4780 bytes
font_01_sfnt_off00007885.bin
4e3a034506bb2f7af7cf517f81d71d2539c73c2b9215809b3b47ba457d4dfb47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 10544 bytes

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