Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e072d3f11c55f1…

MALICIOUS

PDF

39.5 KB Created: 2020-08-15 01:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cc177d4d0818e0e033ce25c0274245f SHA-1: b46f482dd596c45f327d4c6f117ad24081208905 SHA-256: 21e072d3f11c55f138d6080bfa18c41293196f2596e5525b9e9bf016cd7b91eb
130 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'catering service agreement form' and embeds numerous links. One of these links, 'https://ttraff.com/pify?keyword=catering+service+agreement+form', is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest a phishing or credential harvesting attempt, disguised as a legitimate form. No scripts were extracted, limiting the analysis to the document's content and embedded links.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=catering+service+agreement+form
    • http://vozer.regaltanks.com/uploads/1/3/0/9/130969940/bokuz-fapexabe-tilisujamuxava.pdf
    • http://files.pcpagroforestry.com/uploads/1/3/2/3/132303219/63246da2e88078.pdf
    • http://xudibe.anofli.com/uploads/1/3/1/4/131483371/xifutokavamefakas.pdf
    • http://files.dhivyamwedding.com/uploads/1/3/2/8/132815298/xifasuz-pedetodibenujex.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/pdf_y_axis_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/pevezulaxolej.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/4700653574.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/rikeragupujiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/que_es_la_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4177/files/gabobozibidem.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/sosuwokobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6725/2641/files/reneredovubokeza.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/61518964717.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/gixemuxonujegi.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_off00005be0.bin
0372159c0f28af17e55196e9f37b89e3fc3fabd878a247ee6521171c019a0275
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE0 5132 bytes
font_01_sfnt_off00006d54.bin
e6ed46746341d211ccaf9a079fe05c9348fe2a1c84c809e4d182c777d277982d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D54 10560 bytes