Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ed319ad496d1ff…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 00:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a54c97f094da53267b5f9aa2416bc95 SHA-1: befc2f1a69ad9309f899b8f060211b94a646fc74 SHA-256: 36ed319ad496d1ffbc97ad853e2a585dc1e9175da7ffec987ddb4b4032fa96a4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to direct users to malicious websites. One of the primary links, 'https://ttraff.cc/pify?keyword=breadboard+circuit+simulator', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other links hosted on Shopify and other domains, suggesting a link farm designed for SEO manipulation to attract unsuspecting users. The presence of numerous external links points towards a social engineering attack aiming to redirect users to potentially harmful 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.cc/pify?keyword=breadboard+circuit+simulator
    • http://files.imolagaspar.com/uploads/1/3/1/4/131409794/jofitato_wamujezifakuwo_forolu_wobataparugu.pdf
    • http://gotuwaz.nbflebanon.org/uploads/1/3/1/0/131070161/5f2406736.pdf
    • http://buriwekos.redsledornaments.com/uploads/1/3/1/3/131398564/silig.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/kudeweferiwufijevum.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/gebutudaravolawotux.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/fuwelexine.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/vudagi.pdf
    • https://cdn.shopify.com/s/files/1/0463/3460/7522/files/27772789889.pdf
    • https://cdn.shopify.com/s/files/1/0438/8680/5147/files/vevufa.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/41261067019.pdf
    • https://cdn.shopify.com/s/files/1/0462/7952/4501/files/codashop_hack_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/jumusisizoloda.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/dorure.pdf
    • https://cdn.shopify.com/s/files/1/0450/1677/6862/files/barber_shop_equipment_list.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_off0000643e.bin
8d9e930e6dc89b124c43d47f27084d01b8779f88de7829a5a249f425bb363432		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 5276 bytes
font_01_sfnt_off00007605.bin
8190607c3554e165cf5636a381676e26afd0409e947d9206b87e504d43084fa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 10584 bytes

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