Malicious PDF — malware analysis report

Static analysis result for SHA-256 148f9b4ca7522d72…

MALICIOUS

PDF

48.6 KB Authoring application: OpenOffice Draw
MD5: 2ccfba4f3b3241eefeb6bd60f8f880c6 SHA-1: e716b5c3fce53cbda8ee9570929efcac2185006d SHA-256: 148f9b4ca7522d72730699878c6913a4d1944b48972fb107bea97a105573261f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or content distribution strategy. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_LINK_FARM' and the numerous URLs point towards an attempt to manipulate search engine results or redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://bethelmoms33.com/uploads/1/3/0/8/130814783/takal-semafulop-wimugolivuxe.pdf
    • http://urbancharms.com.au/uploads/1/3/0/5/130588307/votaduxudagunoza.pdf
    • http://centreelmos.com/uploads/1/3/0/7/130739088/5481454.pdf
    • http://digitalvisioncenter.com/uploads/1/3/0/6/130639358/nulakosarolomulum.pdf
    • http://mmcarterconsult.com/uploads/1/3/0/7/130738885/c59142b86.pdf
    • http://myersfamilyunified.com/uploads/1/3/0/4/130488382/79ac64.pdf
    • http://newmexiconeuromuscular.com/uploads/1/3/0/7/130775540/3a82c338.pdf
    • http://sinmaps.com/uploads/1/3/0/6/130621805/dazabowaturap.pdf
    • http://sqeda.com/uploads/1/3/0/7/130776100/lodadokiluko.pdf
    • http://mothcrafted.com/uploads/1/3/0/8/130813846/disarijevikadofadug.pdf
    • http://calljasonmyers.com/uploads/1/3/0/7/130775443/sepejivor.pdf
    • http://hopehealthacademy.us/uploads/1/3/0/6/130621344/voresuwuwoperu-xekobikemize.pdf
    • http://mrserio.com/uploads/1/3/0/6/130604598/4187291.pdf
    • http://sugarpaso.com/uploads/1/3/0/6/130621405/mujevubise.pdf
    • http://talltowergames.com/uploads/1/3/0/4/130476818/fuxetipeta-peredotin-sadiwupegubi-pulubamo.pdf
    • http://advance-it.net/uploads/1/3/0/2/130288310/130288310.html#soal+pilgan+praktikum+akuntansi+lembaga%2Finstansi+pemerintah
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000560f.bin
d8b89ccb8774719729fd896d35fbb14933de688e54bf978fa07caf389285b05d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560F 2928 bytes
font_01_sfnt_off00006280.bin
21cff27e639ebceaea6357e747135774897795cf1dfd0fed80dc3624895f72a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6280 8220 bytes

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