Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b97aa13f3f1ca3…

MALICIOUS

PDF

35.5 KB Created: 2020-04-11 22:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 582f07f4d3f7f079ff12f97aae04b9e9 SHA-1: 7eccd27e1d205781b5720c660cae5a1394f56d78 SHA-256: b1b97aa13f3f1ca3276f40b2a3075c11755423f3dba5fb79c1c44896b8b78958
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The embedded URL also points to an HTML file, further supporting the idea of directing users to external resources. No scripts were extracted, limiting the analysis of direct malicious actions within the file itself.

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://duckster.us/uploads/1/3/1/4/131455198/131455198.html#jabra+pro+9450+pair+headset+to+base
    • http://dragonflysshop.com/uploads/1/3/0/5/130589218/6de75bf8866d4.pdf
    • http://allisonlucchetti.com/uploads/1/3/1/4/131437967/3adbd5f096755.pdf
    • http://giftideasforall.net/uploads/1/3/1/3/131383342/4863551.pdf
    • http://thelordcomes.net/uploads/1/3/0/2/130288710/9cdf1079cb2e00.pdf
    • http://verlume.com/uploads/1/3/0/8/130874620/vabanobiruvetajike.pdf
    • http://twocities.net/uploads/1/3/0/6/130620637/kujikijutajujuba.pdf
    • http://biljardservicerg.com/uploads/1/3/0/6/130604594/powatasuro_ritemumazun_nivex.pdf
    • http://gemrosejewelry.com/uploads/1/3/1/3/131384495/jokip_vatojofezafok_vufuxer.pdf
    • http://strategicfitnessonline.com/uploads/1/3/0/5/130589396/tusaluxuj.pdf
    • http://getcleanoc.com/uploads/1/3/0/9/130969679/9e1a6faff7d4.pdf
    • http://coloradopsytrance.com/uploads/1/3/0/4/130483266/xexopatekanaw.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_off0000603d.bin
4768c5fbdbb57b1e981d0248939256346a499adea2de7c0a0e007a4161d73b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 9324 bytes

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