Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c89a140188c918…

MALICIOUS

PDF

34.2 KB Created: 2020-06-11 20:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41bc35a9c17d5909555f67fb7e585b50 SHA-1: f1eda038b5062e1c4c6c1a505b57114cba79d853 SHA-256: f1c89a140188c918cc4e0d4a19c218abd0151642d12fb1067af4c51a98fdfd3c
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. The document body, though partially corrupted, contains text related to 'Greyhound racing guide' and includes several URLs. These URLs are likely used to direct users to malicious or spam content, leveraging the PDF_URI and EMBEDDED_URL heuristics. No scripts were extracted from this sample.

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://buildmaui.net/uploads/1/3/1/4/131453402/131453402.html#greyhound+racing+guide
    • http://gapernahmakan.com/uploads/1/3/0/4/130488251/939160.pdf
    • http://equine-therapeutic.com/uploads/1/3/0/6/130639342/23da7e9bcc60.pdf
    • http://mail.emilyscleaningservice.com/uploads/1/3/1/0/131070539/0073a10352b1.pdf
    • http://mail.dundeepto.org/uploads/1/3/0/7/130776804/4c6e139.pdf
    • http://ayayogaart.com/uploads/1/3/1/6/131636960/jodagetimunama.pdf
    • http://elbeephotography.com/uploads/1/3/0/4/130483684/dasex_vigujinojopu.pdf
    • http://b52farms.com/uploads/1/3/0/6/130604877/xibupejifixebedigar.pdf
    • http://macrotopia.com/uploads/1/3/1/3/131398182/5429502.pdf
    • https://befetoz31370634.files.wordpress.com/2020/06/76357764849.pdf
    • https://fabitilo.files.wordpress.com/2020/06/37531154912.pdf
    • https://mosamexi.files.wordpress.com/2020/06/48148052748.pdf
    • https://nagivujopig.files.wordpress.com/2020/06/4465457976.pdf
    • https://xujeveva.files.wordpress.com/2020/06/gipoxujebujubamewope.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_off00005b97.bin
260273339cf868565aa7f4b8fc20e701ed945e1659e3f46742c84e2e30436e31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B97 10020 bytes

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