Malicious PDF — malware analysis report

Static analysis result for SHA-256 f423d4d35fc53430…

MALICIOUS

PDF

43.0 KB Created: 2020-08-05 06:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d522c7ca1d7efa955d57ae96a3fadb28 SHA-1: 815c23371d13f8729ac5e6e3163fa92938b124ca SHA-256: f423d4d35fc53430a51e99c8d3cca6f661e008d7d9d6cfc960671576e74e6615
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=best+pdf+to+word+converter+online+multiple+files`. The document body also contains this URL and numerous other links, many hosted on `cdn.shopify.com` and other domains, suggesting a link farm designed to attract traffic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=best+pdf+to+word+converter+online+multiple+files
    • http://files.oxfordshirekickboxing.com/uploads/1/3/2/7/132740435/59bd6efb39.pdf
    • http://files.anytimemovers.com/uploads/1/3/1/4/131406288/xivatujudeso_ralogumebepuk.pdf
    • http://files.jerseycarpets.com/uploads/1/3/0/8/130814216/2983082.pdf
    • http://files.hordlevoluntarycare.org/uploads/1/3/0/8/130874413/zoladamalija.pdf
    • http://modadika.kinobykimie.com/uploads/1/3/0/7/130738748/puxekidivolaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/importance_of_forecasting_in_public_policy_formulation.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/55746714155.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/vakobebodizaletivex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdf
    • https://cdn.shopify.com/s/files/1/0432/0739/3439/files/xafegixekulokopidobijagaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/52041544871.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/8891090038.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/denedawijamewuvuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/90629067140.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/home_interior_design_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/lee_load_all_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/31319770730.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_off00006a34.bin
b82283ad10266133ccf2d28991791a8a61fdf69d8a91256b870a169be04978d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A34 5292 bytes
font_01_sfnt_off00007c40.bin
0604e912e3433bdc7e15dc9f00029ffac6c87843d0a7e121069dac7846481d05
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 10024 bytes