Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3fb96b7ca6f4f4…

MALICIOUS

PDF

61.1 KB Created: 2020-08-09 17:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43af777b6a56a73065dfa0d886755d46 SHA-1: fe705575f3009575456616f75a5c392d1f11d049 SHA-256: dc3fb96b7ca6f4f4c94a279e210310d5384127b7f50179c6f311e99eab10d4a4
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.cc). The document body, though heavily obfuscated, contains the text 'Centrifugal pump catalog pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a malicious redirector indicates the intent to lead the user to a harmful destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=centrifugal+pump+catalog+pdf
    • http://files.assemblyrowoffices.com/uploads/1/3/2/6/132681209/rajexujorolutumabil.pdf
    • http://fikirop.bayareabreastfeedingsupport.com/uploads/1/3/1/4/131483281/6620e60c4a7b23.pdf
    • http://files.ilovekreem.com/uploads/1/3/1/1/131164383/girufarodavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/jotojojolitiwoposibakum.pdf
    • https://cdn.shopify.com/s/files/1/0437/5884/6109/files/zibemiwejotazade.pdf
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/vepisapokikilege.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/48346385732.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6735074847.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9600/files/10254958244.pdf
    • https://cdn.shopify.com/s/files/1/0432/8508/6374/files/dogujoraxiv.pdf
    • https://cdn.shopify.com/s/files/1/0450/3742/0708/files/1969902904.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/27790540468.pdf
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/guia_veganismo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/23979898458.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/wunugogokumukepowetar.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/gejaragegupunirikilemav.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/jurnal_anemia_terbaru.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_off0000972a.bin
4832cdc9fbed38c52d276d4bf8b1bb6f1035a30c992831c07111e7a40fbf6a5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x972A 5204 bytes
font_01_sfnt_off0000a8bc.bin
954363f445bc24417e63de98f1c72a9fedade52a8fae90bdb5ff23f104c85807
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8BC 15464 bytes
font_02_sfnt_off0000d8e3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E3 4324 bytes