Malicious PDF — malware analysis report

Static analysis result for SHA-256 2052c780a20f19d3…

MALICIOUS

PDF

52.1 KB Created: 2020-04-03 02:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7110cd67d3853c581c49e7e6c0c93a57 SHA-1: 24923b68281a17cd84b236c9cab6de3852c47992 SHA-256: 2052c780a20f19d32bd7be31d2d369baa4bc3d77c1ff6c22acd3702e381e85a7
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a mass of external PDF links. The document body contains a mix of seemingly random text and URLs, further supporting the link farm hypothesis. 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://ideas-loft.org/uploads/1/3/0/6/130621524/130621524.html#que+es+la+longitud+de+venezuela
    • http://avidaustralianshepherds.com/uploads/1/3/0/9/130969985/wibolomotew.pdf
    • http://morethanamemoryphotos.com/uploads/1/3/0/4/130489572/safutujiwisajuma.pdf
    • http://protecttheloop.com/uploads/1/3/0/4/130476074/a868c.pdf
    • http://cogcapital.net/uploads/1/3/0/4/130436519/giran.pdf
    • http://ksqfarmersmarket.com/uploads/1/3/0/6/130603721/boguzajawuxikunor.pdf
    • http://englishchannelediting.com/uploads/1/3/0/9/130969552/zafiviluve.pdf
    • http://hog-hongkong.com/uploads/1/3/1/4/131437683/6344869.pdf
    • http://supercleanemmajeannes.com/uploads/1/3/0/4/130476313/libimigudarozin-tubolikavig-dumobularaka-zizod.pdf
    • http://rainbowsprinklescupcakery.com/uploads/1/3/1/4/131407760/suduro.pdf
    • http://garagedoorrepairhesperiaca.com/uploads/1/3/1/4/131482975/wigej.pdf
    • http://ibuyhomesfastcashllc.com/uploads/1/3/1/1/131163752/3533b5de58.pdf
    • http://zcarrpublicadjuster.com/uploads/1/3/0/5/130589159/722096314.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_off000079be.bin
fea11c98073c0dcf52e021830dd1976a0dae2ed5cb7867001f73944a05fc3229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BE 10692 bytes
font_01_sfnt_off00009f03.bin
4d472d934b5304eb37c84f5a2f8b1df226cb83ca8260050021bb7bd78324f001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F03 3284 bytes
font_02_sfnt_off0000aaa8.bin
72c049f7ede4442d9f896032f115db934746fb24edb5896aedbb7ad887c31e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAA8 16336 bytes

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