Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf9e8a22daeb746…

MALICIOUS

PDF

54.6 KB Created: 2020-03-31 20:21:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7b5f30db7ce2c7b1f1d0643f0bbd0db4 SHA-1: a524f41d546d1b5ae7d4a909194a26bbc38aa275 SHA-256: 7bf9e8a22daeb7466bf2f20beeddcf4dd8842e5b78ecc0f49b72ac169686841c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve to inflate search engine rankings or redirect users to malicious content. No scripts were extracted, and the document body is largely unreadable, limiting further analysis of the specific lure. The primary attack pattern observed is the mass distribution of external links within the PDF.

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://the-whole-thing.com/uploads/1/3/0/2/130274378/130274378.html#cual+es+la+importancia+de+la+argumentacion+en+un+texto
    • http://faircareservices.com/uploads/1/3/0/7/130775653/2517713.pdf
    • http://kyokushinkanaustralia.com/uploads/1/3/0/6/130604112/e87bbd06e937.pdf
    • http://natru.net/uploads/1/3/0/7/130740151/a302a959a591.pdf
    • http://pinehill-in-the-catskills.com/uploads/1/3/1/3/131382590/9812480.pdf
    • http://mail.comeandseefbc.org/uploads/1/3/0/7/130739146/5c7e989ef.pdf
    • http://gppasco.com/uploads/1/3/0/5/130588729/dorabuzibe_jiperedal_wolupuj_wapesofexizu.pdf
    • http://humbertoveloso.com/uploads/1/3/1/4/131437766/4602070.pdf
    • http://robmalo.com/uploads/1/3/0/6/130604671/edc603.pdf
    • http://mamas-moment.com/uploads/1/3/0/8/130874076/4849877.pdf
    • http://smplife.biz/uploads/1/3/0/6/130621076/35ded7b6a5f.pdf
    • http://lotuseyez.org/uploads/1/3/0/4/130488604/degowig.pdf
    • http://ejoevaultservices.org/uploads/1/3/0/9/130969671/mudawa.pdf
    • http://wyngoldpark.com/uploads/1/3/0/3/130313241/tuzudije.pdf
    • http://mysilentpartners.net/uploads/1/3/0/5/130550867/zejen.pdf
    • http://melissasiciliano.com/uploads/1/3/0/2/130289262/9623256.pdf
    • http://rasooldiaz.com/uploads/1/3/0/4/130476180/gomivijotip-peworuzu.pdf
    • http://providence-title.com/uploads/1/3/0/6/130639629/4093040.pdf
    • http://thegloryzonewc.com/uploads/1/3/0/4/130483848/e80872cc.pdf
    • http://marig.se/uploads/1/3/0/5/130589322/3c60b6.pdf
    • http://ourserenityhouse.net/uploads/1/3/0/6/130621120/42020b60.pdf
    • http://namuco.net/uploads/1/3/0/8/130814729/7da4ce0b0.pdf
    • http://regencyhotelhumbletx.com/uploads/1/3/0/6/130640074/fukesugod_xoxane_kirogisu_durezerazuraw.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_off00009730.bin
f4c18a258b192e9d456315ef8931c1f26c557eb489a823a833f4d3b87896582b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9730 8092 bytes
font_01_sfnt_off0000b4e6.bin
f19dc41d490b60033b52f2fdde74623f1ba9924597607807c173cf149651756c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4E6 16060 bytes

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