Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2988e609528c265…

MALICIOUS

PDF

43.5 KB Created: 2020-03-30 01:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6b9e5f2a273d9fdac22ef60617766007 SHA-1: 384ffe1391a069d8e7b4c424b8a583a167b50ba8 SHA-256: b2988e609528c2653d36a43b117a5f1ecffcade0259e3229cd2248858291ef4c
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The document body, though partially corrupted, contains a URL that is also present in the list of extracted URLs. No scripts were extracted from this sample, limiting the ability to determine a specific payload delivery mechanism.

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://juliejesternewman.com/uploads/1/3/0/9/130969663/130969663.html#como+graficar+funciones+trigonometricas+tangente
    • http://610zane.com/uploads/1/3/1/0/131069934/381a4991a.pdf
    • http://bahiserv.com/uploads/1/3/0/2/130289628/gazodit.pdf
    • http://newmexicofashioninfo.com/uploads/1/3/0/5/130544091/lakaragituxavim.pdf
    • http://nkaskephotography.com/uploads/1/3/0/2/130273978/43e8cb.pdf
    • http://icis-bad-woerishofen.com/uploads/1/3/0/4/130476511/5854062.pdf
    • http://kaunderground.com/uploads/1/3/1/1/131164462/delufogup-pewoxuzuzaw.pdf
    • http://theyandus.com/uploads/1/3/0/2/130287284/5360010.pdf
    • http://westcliffesupplyco.com/uploads/1/3/0/6/130605259/4914c9c2b16e40.pdf
    • http://bolsterrogers.com/uploads/1/3/0/7/130739583/3b6cd15fe7.pdf
    • http://2msolutions4u.com/uploads/1/3/0/4/130435514/vujexos.pdf
    • http://candid-events.com/uploads/1/3/0/2/130289632/c8966ea1f.pdf
    • http://mail.safeharborpaymentsystems.com/uploads/1/3/1/3/131379650/2192227.pdf
    • http://racetogetherseries.org/uploads/1/3/0/8/130874136/zonofazewezi.pdf
    • http://annusalminen.fi/uploads/1/3/0/4/130435819/zujorimigudado.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_off000077e9.bin
4812b1d704b8a18880bb44f37f7e679bb955c930f36d6de7a39ffb2f5016a7c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 7748 bytes
font_01_sfnt_off000094b3.bin
985cbd9ba5b629f1b749d04d852c0eecb5d8ad374186a1044a60da9476420dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B3 2788 bytes

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