Malicious PDF — malware analysis report

Static analysis result for SHA-256 da72f42e5e62a6a1…

MALICIOUS

PDF

39.9 KB Created: 2020-06-20 05:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78e4bb0acd1696903da042d2eb21dee6 SHA-1: 58fec2a08b5f51e568424115eb37cd3b83681827 SHA-256: da72f42e5e62a6a104a0366b64b4f7270ad7b30220d4248c242a9c18db22b3a6
62 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results or host malicious content. The document body itself contains a seemingly innocuous title related to exercise and blood pressure, likely a lure to disguise the malicious intent of the embedded links. 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://amvassallo.com/uploads/1/3/1/6/131606482/131606482.html#why+does+blood+pressure+rise+after+exercise
    • http://michelle-grace-lazar.com/uploads/1/3/1/3/131379014/00c7928a7ecbdb.pdf
    • http://katetobin.net/uploads/1/3/0/7/130776811/dinuvafogopa.pdf
    • http://juniorbites.net/uploads/1/3/1/8/131871426/33e9be6.pdf
    • http://futurewaiting.org/uploads/1/3/1/4/131453453/niniza-gitineluj-xulujogamezetup-lomifo.pdf
    • http://aninspiringcompany.com/uploads/1/3/0/2/130287289/93ece811ffba24.pdf
    • http://147367436464836187.com/uploads/1/3/0/6/130639860/numupabewitetar.pdf
    • http://autodiscover.mindbusterstrivia.com/uploads/1/3/1/4/131437296/3d928.pdf
    • http://admin.hwupenyuproject.org/uploads/1/3/0/6/130639784/paxapuselipegi.pdf
    • http://hostmaster.datatechdigital.com/uploads/1/3/1/8/131871781/gewop-xarekew.pdf
    • http://herbangardensllc.com/uploads/1/3/1/4/131454359/9553857.pdf
    • http://bcsdigitalgoods.com/uploads/1/3/0/5/130543494/benerusewejutatexilo.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_off00005dcd.bin
7f18b678a7608615af187638064ad9e7de73b305bf08c0e52185ebb94d4a88e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCD 5344 bytes
font_01_sfnt_off00007022.bin
91061cf3557c692b7723cbccfb72d50ada7fa79f5965e5b443f6a136cb254b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7022 10116 bytes

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