Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73867dc24e9d899…

MALICIOUS

PDF

41.4 KB Created: 2020-05-21 07:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dd6367400836448f4d769045ea03864 SHA-1: 8477abf762f2a385f876497f3d2ae0af40802416 SHA-256: b73867dc24e9d8993d65242b78575beb54d2b9f8a336a2d210af18b704149233
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO poisoning or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to drive traffic to numerous PDF files hosted across various domains. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://kalajarvenlomakyla.fi/uploads/1/3/1/6/131606546/131606546.html#radionovela+chucho+el+roto
    • http://accesshomecare.org/uploads/1/3/0/8/130874394/xuzawivul.pdf
    • http://gonioworks.com/uploads/1/3/1/1/131164110/9467044.pdf
    • http://jasminedionne.com/uploads/1/3/0/9/130969525/xinukuwe.pdf
    • http://customavionics.com/uploads/1/3/0/8/130874388/mafoxokidorogat.pdf
    • http://grandsiriresort.com/uploads/1/3/1/6/131637226/6182883.pdf
    • http://cirugiaplasticasclc.com/uploads/1/3/1/4/131437623/727e6be36a.pdf
    • http://guyinteriors.com/uploads/1/3/1/8/131856326/1154545.pdf
    • http://samsungservicecenter.net/uploads/1/3/0/6/130639152/1790102.pdf
    • http://columbiahvacrepair.com/uploads/1/3/0/8/130813269/vexididerun.pdf
    • http://desktoys.store/uploads/1/3/0/7/130738752/3684295.pdf
    • http://2550unionhills.com/uploads/1/3/1/4/131455543/7ffd02ff4e8.pdf
    • http://gobacktonature.org/uploads/1/3/0/6/130604557/e3253d.pdf
    • http://chilakorivercattlecompany.org/uploads/1/3/0/5/130588559/17ae16692a1.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_off000074a3.bin
8e4d50540aaa62e1cf07221d2249564e2e248e39dd31790a381338dc0ff8717b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A3 11248 bytes

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