Malicious PDF — malware analysis report

Static analysis result for SHA-256 2291887d4fab1816…

MALICIOUS

PDF

37.4 KB Created: 2020-04-09 00:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5a48e8e05f87d443ed4ddf5ab461b6bb SHA-1: 60dabe51e5d74175d2f6a6abaed00d6d9f406b8d SHA-256: 2291887d4fab1816c47f0cb0d21e283f2c6eb76fa710a589ed2b7b104219690c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body mentions 'Nortel networks phone codes' and includes a URL that appears to be a lure to a related page. The primary function seems to be directing users to a network of potentially malicious or SEO-spam websites.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://reboottransform.net/uploads/1/3/1/3/131379223/131379223.html#nortel+networks+phone+codes
    • http://aegisve.com/uploads/1/3/0/7/130776406/fezan.pdf
    • http://balmingileadskincare.com/uploads/1/3/0/7/130775310/gepesufizunorefa.pdf
    • http://vrodcast.com/uploads/1/3/0/5/130539188/4208984.pdf
    • http://rearviewmotors.com/uploads/1/3/0/6/130622047/terobofe.pdf
    • http://mx.beesaliveclub.org/uploads/1/3/0/5/130588492/badawul_lekuletojokami.pdf
    • http://dirt-bg-one.com/uploads/1/3/0/8/130814032/1db472ced7aff.pdf
    • http://deborahgraff.com/uploads/1/3/0/7/130740513/ruvinos.pdf
    • http://geoprize.com/uploads/1/3/0/7/130739006/tanav.pdf
    • http://mealplan4you.com/uploads/1/3/0/6/130604072/5207910.pdf
    • http://perth-waterproofing.com/uploads/1/3/0/4/130489168/deceb63bcc3.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b5.bin
3886c7dfd739b4e005246ef1cde5234767553d89573242a28ae042b94d7fec14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 8108 bytes

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