Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a67f695a3a1e9a…

MALICIOUS

PDF

46.3 KB Created: 2020-08-07 01:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e302ef197ede2c107ca5ae1620970c0 SHA-1: 163300190d09b8fffff4950c2f84bd276e1fe542 SHA-256: c6a67f695a3a1e9a7acc908f1cc35a06cff90a63f1cbc8d46c449bf85bf0390a
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through numerous embedded links, with a critical heuristic identifying it as a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=andrei+moreira+livros+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious content or phish users. No scripts were extracted, limiting the analysis of direct payload execution.

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.com/pify?keyword=andrei+moreira+livros+pdf
    • http://files.techknowhawaii.com/uploads/1/3/1/6/131606694/zunebomuvu.pdf
    • http://vejuvuped.eaglendt.services/uploads/1/3/2/8/132816066/9430180.pdf
    • http://files.pinkcheeksbymadeleine.com/uploads/1/3/0/9/130969700/63c5efe8.pdf
    • https://cdn.shopify.com/s/files/1/0436/4815/5806/files/79677881391.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/fapuje.pdf
    • https://cdn.shopify.com/s/files/1/0437/0772/8023/files/lovesulepirake.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/68223171515.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/35949389465.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/xekidetazixojil.pdf
    • https://cdn.shopify.com/s/files/1/0439/3464/6440/files/volov.pdf
    • https://cdn.shopify.com/s/files/1/0444/5034/9223/files/activation_functions_in_neural_networks.pdf
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/xugokizaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/mowogunixitazap.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/48741615484.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/92438228863.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ca.bin
cea4de5ecdb8ee76fd1710268a1b580ae6d48ee1c1b5a740fd42de3720687d2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 5236 bytes
font_01_sfnt_off00007389.bin
a06c71fd8f21ec7fe807eae544ab38c0d74b88b386848329f36238b3702a23af
pdf-font-stream PDF embedded font (sfnt) at offset 0x7389 10504 bytes
font_02_sfnt_off00009794.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9794 16036 bytes