Malicious PDF — malware analysis report

Static analysis result for SHA-256 252d9f04833d1c74…

MALICIOUS

PDF

34.1 KB Created: 2020-04-01 17:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9c1a164cbd7fb6464bf5d6a9500dacab SHA-1: 6bd65384741b93e765465c2180ddc9607380e878 SHA-256: 252d9f04833d1c74142836bb1568cb9abce5dca4516c1ce393ea14c9daee9488
92 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body mentions 'Bmw garage door opener genie', likely a lure to attract clicks. The ML classifier strongly indicated maliciousness, and the PDF structure itself suggests a link farm attack. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • 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://stfrancisofassisifraternity.org/uploads/1/3/0/9/130969573/130969573.html#bmw+garage+door+opener+genie
    • http://obediencedogtrainingomaha.com/uploads/1/3/0/5/130543511/nugokaxufilitafin.pdf
    • http://vineyardvans.com/uploads/1/3/0/7/130738918/besuxarolamira.pdf
    • http://tudoparafoto.com/uploads/1/3/0/6/130620788/5eca5a37e42.pdf
    • http://restorelifemedical.org/uploads/1/3/0/6/130604207/nerim.pdf
    • http://selfsciencelabs.com/uploads/1/3/0/4/130489358/2583888.pdf
    • http://dumbenergydepot.com/uploads/1/3/0/8/130874398/tuxatujemiwitofakivo.pdf
    • http://beautyonthegobyjessica.com/uploads/1/3/0/4/130483626/xozimi.pdf
    • http://ksaccountants.com/uploads/1/3/0/2/130289317/e50c84.pdf
    • http://kudzurva.com/uploads/1/3/1/4/131438156/torozokilevelifufis.pdf
    • http://cackradio.com/uploads/1/3/0/5/130590508/6882643.pdf
    • http://haysfarms.net/uploads/1/3/0/7/130739182/e73946.pdf
    • http://astroeatz.com/uploads/1/3/0/2/130288441/7288613.pdf
    • http://djsg.es/uploads/1/3/0/6/130604421/sazenivadevowaka.pdf
    • http://healingmyanxiety.org/uploads/1/3/0/5/130544754/nidomibipixur_zefuvugusa_lugavo_xepapujuraxofu.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_off00005cba.bin
f0dc5b760b522c9a2de2651dbfa5ac284abde4dac6ff1394978116d9d134f182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBA 7892 bytes

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